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Finding the Fourth Proportional to 8,677.01, 13,012.07 and 3,128.42

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Solution

The fourth proportional to 8,677.01, 13,012.07 and 3,128.42 is: 4,691.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,677.01 : 13,012.07 = 3,128.42 : x
  2. Step 2: Convert to fraction form
    8,677.01/13,012.07 = 3,128.42/x
  3. Step 3: Cross multiply
    8,677.01x = 13,012.07 × 3,128.42
  4. Step 4: Simplify right side
    8,677.01x = 40,707,139.33
  5. Step 5: Solve for x
    x = 40,707,139.33/8,677.01
  6. Step 6: Final answer
    x = 4,691.38

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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.