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Finding the Fourth Proportional to 9,432, 13,017.60 and 5,708.16

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Solution

The fourth proportional to 9,432, 13,017.60 and 5,708.16 is: 7,878.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,432 : 13,017.60 = 5,708.16 : x
  2. Step 2: Convert to fraction form
    9,432/13,017.60 = 5,708.16/x
  3. Step 3: Cross multiply
    9,432x = 13,017.60 × 5,708.16
  4. Step 4: Simplify right side
    9,432x = 74,306,543.62
  5. Step 5: Solve for x
    x = 74,306,543.62/9,432
  6. Step 6: Final answer
    x = 7,878.13

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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.