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Finding the Fourth Proportional to 7,471.04, 10,235.36 and 7,190.78

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Solution

The fourth proportional to 7,471.04, 10,235.36 and 7,190.78 is: 9,851.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,471.04 : 10,235.36 = 7,190.78 : x
  2. Step 2: Convert to fraction form
    7,471.04/10,235.36 = 7,190.78/x
  3. Step 3: Cross multiply
    7,471.04x = 10,235.36 × 7,190.78
  4. Step 4: Simplify right side
    7,471.04x = 73,600,188.78
  5. Step 5: Solve for x
    x = 73,600,188.78/7,471.04
  6. Step 6: Final answer
    x = 9,851.40

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.