Home / 8,687.20-13,029.44-2,447.68

Finding the Fourth Proportional to 8,687.20, 13,029.44 and 2,447.68

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Solution

The fourth proportional to 8,687.20, 13,029.44 and 2,447.68 is: 3,671.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,687.20 : 13,029.44 = 2,447.68 : x
  2. Step 2: Convert to fraction form
    8,687.20/13,029.44 = 2,447.68/x
  3. Step 3: Cross multiply
    8,687.20x = 13,029.44 × 2,447.68
  4. Step 4: Simplify right side
    8,687.20x = 31,891,899.70
  5. Step 5: Solve for x
    x = 31,891,899.70/8,687.20
  6. Step 6: Final answer
    x = 3,671.14

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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.