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Finding the Fourth Proportional to 7,478.70, 11,218.05 and 3,094.98

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Solution

The fourth proportional to 7,478.70, 11,218.05 and 3,094.98 is: 4,642.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,478.70 : 11,218.05 = 3,094.98 : x
  2. Step 2: Convert to fraction form
    7,478.70/11,218.05 = 3,094.98/x
  3. Step 3: Cross multiply
    7,478.70x = 11,218.05 × 3,094.98
  4. Step 4: Simplify right side
    7,478.70x = 34,719,640.39
  5. Step 5: Solve for x
    x = 34,719,640.39/7,478.70
  6. Step 6: Final answer
    x = 4,642.47

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.