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Finding the Fourth Proportional to 8,878.20, 12,252.65 and 4,899.71

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Solution

The fourth proportional to 8,878.20, 12,252.65 and 4,899.71 is: 6,762.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,878.20 : 12,252.65 = 4,899.71 : x
  2. Step 2: Convert to fraction form
    8,878.20/12,252.65 = 4,899.71/x
  3. Step 3: Cross multiply
    8,878.20x = 12,252.65 × 4,899.71
  4. Step 4: Simplify right side
    8,878.20x = 60,034,345.97
  5. Step 5: Solve for x
    x = 60,034,345.97/8,878.20
  6. Step 6: Final answer
    x = 6,762.00

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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.