Home / 5,381.12-7,425.99-2,991.13

Finding the Fourth Proportional to 5,381.12, 7,425.99 and 2,991.13

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Solution

The fourth proportional to 5,381.12, 7,425.99 and 2,991.13 is: 4,127.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,381.12 : 7,425.99 = 2,991.13 : x
  2. Step 2: Convert to fraction form
    5,381.12/7,425.99 = 2,991.13/x
  3. Step 3: Cross multiply
    5,381.12x = 7,425.99 × 2,991.13
  4. Step 4: Simplify right side
    5,381.12x = 22,212,082.90
  5. Step 5: Solve for x
    x = 22,212,082.90/5,381.12
  6. Step 6: Final answer
    x = 4,127.78

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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.