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Finding the Fourth Proportional to 8,587.95, 12,882.32 and 2,668.87

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Solution

The fourth proportional to 8,587.95, 12,882.32 and 2,668.87 is: 4,003.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,587.95 : 12,882.32 = 2,668.87 : x
  2. Step 2: Convert to fraction form
    8,587.95/12,882.32 = 2,668.87/x
  3. Step 3: Cross multiply
    8,587.95x = 12,882.32 × 2,668.87
  4. Step 4: Simplify right side
    8,587.95x = 34,381,237.38
  5. Step 5: Solve for x
    x = 34,381,237.38/8,587.95
  6. Step 6: Final answer
    x = 4,003.43

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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.