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Finding the Fourth Proportional to 8,515.98, 12,757.90 and 4,358.62

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Solution

The fourth proportional to 8,515.98, 12,757.90 and 4,358.62 is: 6,529.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,515.98 : 12,757.90 = 4,358.62 : x
  2. Step 2: Convert to fraction form
    8,515.98/12,757.90 = 4,358.62/x
  3. Step 3: Cross multiply
    8,515.98x = 12,757.90 × 4,358.62
  4. Step 4: Simplify right side
    8,515.98x = 55,606,839.06
  5. Step 5: Solve for x
    x = 55,606,839.06/8,515.98
  6. Step 6: Final answer
    x = 6,529.71

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1.5x scale

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.