Home / 5,178.29-7,747.70-3,142.13

Finding the Fourth Proportional to 5,178.29, 7,747.70 and 3,142.13

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Solution

The fourth proportional to 5,178.29, 7,747.70 and 3,142.13 is: 4,701.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.29 : 7,747.70 = 3,142.13 : x
  2. Step 2: Convert to fraction form
    5,178.29/7,747.70 = 3,142.13/x
  3. Step 3: Cross multiply
    5,178.29x = 7,747.70 × 3,142.13
  4. Step 4: Simplify right side
    5,178.29x = 24,344,226.15
  5. Step 5: Solve for x
    x = 24,344,226.15/5,178.29
  6. Step 6: Final answer
    x = 4,701.21

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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.