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Finding the Fourth Proportional to 8,695.33, 12,979.33 and 7,470.61

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Solution

The fourth proportional to 8,695.33, 12,979.33 and 7,470.61 is: 11,151.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,695.33 : 12,979.33 = 7,470.61 : x
  2. Step 2: Convert to fraction form
    8,695.33/12,979.33 = 7,470.61/x
  3. Step 3: Cross multiply
    8,695.33x = 12,979.33 × 7,470.61
  4. Step 4: Simplify right side
    8,695.33x = 96,963,512.49
  5. Step 5: Solve for x
    x = 96,963,512.49/8,695.33
  6. Step 6: Final answer
    x = 11,151.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.