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Finding the Fourth Proportional to 8,480.78, 11,712.62 and 6,614.54

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Solution

The fourth proportional to 8,480.78, 11,712.62 and 6,614.54 is: 9,135.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,480.78 : 11,712.62 = 6,614.54 : x
  2. Step 2: Convert to fraction form
    8,480.78/11,712.62 = 6,614.54/x
  3. Step 3: Cross multiply
    8,480.78x = 11,712.62 × 6,614.54
  4. Step 4: Simplify right side
    8,480.78x = 77,473,551.47
  5. Step 5: Solve for x
    x = 77,473,551.47/8,480.78
  6. Step 6: Final answer
    x = 9,135.20

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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.