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Finding the Fourth Proportional to 8,127.40, 11,006.55 and 8,127.40

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Solution

The fourth proportional to 8,127.40, 11,006.55 and 8,127.40 is: 11,006.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,127.40 : 11,006.55 = 8,127.40 : x
  2. Step 2: Convert to fraction form
    8,127.40/11,006.55 = 8,127.40/x
  3. Step 3: Cross multiply
    8,127.40x = 11,006.55 × 8,127.40
  4. Step 4: Simplify right side
    8,127.40x = 89,454,634.47
  5. Step 5: Solve for x
    x = 89,454,634.47/8,127.40
  6. Step 6: Final answer
    x = 11,006.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.