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Finding the Fourth Proportional to 8,687.58, 13,031.38 and 2,447.59

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Solution

The fourth proportional to 8,687.58, 13,031.38 and 2,447.59 is: 3,671.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,687.58 : 13,031.38 = 2,447.59 : x
  2. Step 2: Convert to fraction form
    8,687.58/13,031.38 = 2,447.59/x
  3. Step 3: Cross multiply
    8,687.58x = 13,031.38 × 2,447.59
  4. Step 4: Simplify right side
    8,687.58x = 31,895,475.37
  5. Step 5: Solve for x
    x = 31,895,475.37/8,687.58
  6. Step 6: Final answer
    x = 3,671.39

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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.