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Finding the Fourth Proportional to 7,489.78, 10,335.42 and 4,132.41

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Solution

The fourth proportional to 7,489.78, 10,335.42 and 4,132.41 is: 5,702.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,489.78 : 10,335.42 = 4,132.41 : x
  2. Step 2: Convert to fraction form
    7,489.78/10,335.42 = 4,132.41/x
  3. Step 3: Cross multiply
    7,489.78x = 10,335.42 × 4,132.41
  4. Step 4: Simplify right side
    7,489.78x = 42,710,192.96
  5. Step 5: Solve for x
    x = 42,710,192.96/7,489.78
  6. Step 6: Final answer
    x = 5,702.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.