Home / 5,712.12-7,882.38-3,616.92

Finding the Fourth Proportional to 5,712.12, 7,882.38 and 3,616.92

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Solution

The fourth proportional to 5,712.12, 7,882.38 and 3,616.92 is: 4,991.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,712.12 : 7,882.38 = 3,616.92 : x
  2. Step 2: Convert to fraction form
    5,712.12/7,882.38 = 3,616.92/x
  3. Step 3: Cross multiply
    5,712.12x = 7,882.38 × 3,616.92
  4. Step 4: Simplify right side
    5,712.12x = 28,509,937.87
  5. Step 5: Solve for x
    x = 28,509,937.87/5,712.12
  6. Step 6: Final answer
    x = 4,991.13

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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.