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Finding the Fourth Proportional to 8,668.71, 12,997.59 and 4,775.85

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Solution

The fourth proportional to 8,668.71, 12,997.59 and 4,775.85 is: 7,160.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668.71 : 12,997.59 = 4,775.85 : x
  2. Step 2: Convert to fraction form
    8,668.71/12,997.59 = 4,775.85/x
  3. Step 3: Cross multiply
    8,668.71x = 12,997.59 × 4,775.85
  4. Step 4: Simplify right side
    8,668.71x = 62,074,540.20
  5. Step 5: Solve for x
    x = 62,074,540.20/8,668.71
  6. Step 6: Final answer
    x = 7,160.76

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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.