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Finding the Fourth Proportional to 3,569.80, 5,355.02 and 972.76

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Solution

The fourth proportional to 3,569.80, 5,355.02 and 972.76 is: 1,459.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,569.80 : 5,355.02 = 972.76 : x
  2. Step 2: Convert to fraction form
    3,569.80/5,355.02 = 972.76/x
  3. Step 3: Cross multiply
    3,569.80x = 5,355.02 × 972.76
  4. Step 4: Simplify right side
    3,569.80x = 5,209,149.26
  5. Step 5: Solve for x
    x = 5,209,149.26/3,569.80
  6. Step 6: Final answer
    x = 1,459.23

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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.