Home / 8,716.71-12,029.28-5,131.85

Finding the Fourth Proportional to 8,716.71, 12,029.28 and 5,131.85

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Solution

The fourth proportional to 8,716.71, 12,029.28 and 5,131.85 is: 7,082.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,716.71 : 12,029.28 = 5,131.85 : x
  2. Step 2: Convert to fraction form
    8,716.71/12,029.28 = 5,131.85/x
  3. Step 3: Cross multiply
    8,716.71x = 12,029.28 × 5,131.85
  4. Step 4: Simplify right side
    8,716.71x = 61,732,400.42
  5. Step 5: Solve for x
    x = 61,732,400.42/8,716.71
  6. Step 6: Final answer
    x = 7,082.08

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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.