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Finding the Fourth Proportional to 8,963.16, 12,360.48 and 5,979.12

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Solution

The fourth proportional to 8,963.16, 12,360.48 and 5,979.12 is: 8,245.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,963.16 : 12,360.48 = 5,979.12 : x
  2. Step 2: Convert to fraction form
    8,963.16/12,360.48 = 5,979.12/x
  3. Step 3: Cross multiply
    8,963.16x = 12,360.48 × 5,979.12
  4. Step 4: Simplify right side
    8,963.16x = 73,904,793.18
  5. Step 5: Solve for x
    x = 73,904,793.18/8,963.16
  6. Step 6: Final answer
    x = 8,245.39

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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.