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Finding the Fourth Proportional to 8,752.68, 12,070.62 and 7,877.88

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Solution

The fourth proportional to 8,752.68, 12,070.62 and 7,877.88 is: 10,864.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,752.68 : 12,070.62 = 7,877.88 : x
  2. Step 2: Convert to fraction form
    8,752.68/12,070.62 = 7,877.88/x
  3. Step 3: Cross multiply
    8,752.68x = 12,070.62 × 7,877.88
  4. Step 4: Simplify right side
    8,752.68x = 95,090,895.89
  5. Step 5: Solve for x
    x = 95,090,895.89/8,752.68
  6. Step 6: Final answer
    x = 10,864.20

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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.