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Finding the Fourth Proportional to 8,976.68, 12,387.68 and 4,998.12

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Solution

The fourth proportional to 8,976.68, 12,387.68 and 4,998.12 is: 6,897.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,976.68 : 12,387.68 = 4,998.12 : x
  2. Step 2: Convert to fraction form
    8,976.68/12,387.68 = 4,998.12/x
  3. Step 3: Cross multiply
    8,976.68x = 12,387.68 × 4,998.12
  4. Step 4: Simplify right side
    8,976.68x = 61,915,111.16
  5. Step 5: Solve for x
    x = 61,915,111.16/8,976.68
  6. Step 6: Final answer
    x = 6,897.33

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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.