Home / 5,381.13-7,425.53-2,990.91

Finding the Fourth Proportional to 5,381.13, 7,425.53 and 2,990.91

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Solution

The fourth proportional to 5,381.13, 7,425.53 and 2,990.91 is: 4,127.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,381.13 : 7,425.53 = 2,990.91 : x
  2. Step 2: Convert to fraction form
    5,381.13/7,425.53 = 2,990.91/x
  3. Step 3: Cross multiply
    5,381.13x = 7,425.53 × 2,990.91
  4. Step 4: Simplify right side
    5,381.13x = 22,209,107.70
  5. Step 5: Solve for x
    x = 22,209,107.70/5,381.13
  6. Step 6: Final answer
    x = 4,127.22

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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.