Home / 5,143.38-7,715.26-2,643.90

Finding the Fourth Proportional to 5,143.38, 7,715.26 and 2,643.90

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Solution

The fourth proportional to 5,143.38, 7,715.26 and 2,643.90 is: 3,965.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.38 : 7,715.26 = 2,643.90 : x
  2. Step 2: Convert to fraction form
    5,143.38/7,715.26 = 2,643.90/x
  3. Step 3: Cross multiply
    5,143.38x = 7,715.26 × 2,643.90
  4. Step 4: Simplify right side
    5,143.38x = 20,398,337.34
  5. Step 5: Solve for x
    x = 20,398,337.34/5,143.38
  6. Step 6: Final answer
    x = 3,965.94

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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.