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Finding the Fourth Proportional to 8,708.80, 13,064.11 and 2,865.87

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Solution

The fourth proportional to 8,708.80, 13,064.11 and 2,865.87 is: 4,299.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,708.80 : 13,064.11 = 2,865.87 : x
  2. Step 2: Convert to fraction form
    8,708.80/13,064.11 = 2,865.87/x
  3. Step 3: Cross multiply
    8,708.80x = 13,064.11 × 2,865.87
  4. Step 4: Simplify right side
    8,708.80x = 37,440,040.93
  5. Step 5: Solve for x
    x = 37,440,040.93/8,708.80
  6. Step 6: Final answer
    x = 4,299.10

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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.