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Finding the Fourth Proportional to 3,569.39, 5,354.15 and 972.32

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Solution

The fourth proportional to 3,569.39, 5,354.15 and 972.32 is: 1,458.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,569.39 : 5,354.15 = 972.32 : x
  2. Step 2: Convert to fraction form
    3,569.39/5,354.15 = 972.32/x
  3. Step 3: Cross multiply
    3,569.39x = 5,354.15 × 972.32
  4. Step 4: Simplify right side
    3,569.39x = 5,205,915.50
  5. Step 5: Solve for x
    x = 5,205,915.50/3,569.39
  6. Step 6: Final answer
    x = 1,458.49

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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.