Home / 5,487.02-7,572.22-3,129.38

Finding the Fourth Proportional to 5,487.02, 7,572.22 and 3,129.38

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Solution

The fourth proportional to 5,487.02, 7,572.22 and 3,129.38 is: 4,318.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,487.02 : 7,572.22 = 3,129.38 : x
  2. Step 2: Convert to fraction form
    5,487.02/7,572.22 = 3,129.38/x
  3. Step 3: Cross multiply
    5,487.02x = 7,572.22 × 3,129.38
  4. Step 4: Simplify right side
    5,487.02x = 23,696,338.18
  5. Step 5: Solve for x
    x = 23,696,338.18/5,487.02
  6. Step 6: Final answer
    x = 4,318.62

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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.