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Finding the Fourth Proportional to 4,940.36, 7,378.98 and 4,471.11

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Solution

The fourth proportional to 4,940.36, 7,378.98 and 4,471.11 is: 6,678.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,940.36 : 7,378.98 = 4,471.11 : x
  2. Step 2: Convert to fraction form
    4,940.36/7,378.98 = 4,471.11/x
  3. Step 3: Cross multiply
    4,940.36x = 7,378.98 × 4,471.11
  4. Step 4: Simplify right side
    4,940.36x = 32,992,231.27
  5. Step 5: Solve for x
    x = 32,992,231.27/4,940.36
  6. Step 6: Final answer
    x = 6,678.11

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Find fourth proportional to 2,470.18, 3,689.49 and 2,235.56
Half scale
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Double scale
Find fourth proportional to 4,941.36, 7,380.47 and 4,472.11
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.