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Finding the Fourth Proportional to 8,878.31, 12,251.99 and 4,899.59

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Solution

The fourth proportional to 8,878.31, 12,251.99 and 4,899.59 is: 6,761.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,878.31 : 12,251.99 = 4,899.59 : x
  2. Step 2: Convert to fraction form
    8,878.31/12,251.99 = 4,899.59/x
  3. Step 3: Cross multiply
    8,878.31x = 12,251.99 × 4,899.59
  4. Step 4: Simplify right side
    8,878.31x = 60,029,727.68
  5. Step 5: Solve for x
    x = 60,029,727.68/8,878.31
  6. Step 6: Final answer
    x = 6,761.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.