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Finding the Fourth Proportional to 8,772.62, 13,218.11 and 7,246.80

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Solution

The fourth proportional to 8,772.62, 13,218.11 and 7,246.80 is: 10,919.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,772.62 : 13,218.11 = 7,246.80 : x
  2. Step 2: Convert to fraction form
    8,772.62/13,218.11 = 7,246.80/x
  3. Step 3: Cross multiply
    8,772.62x = 13,218.11 × 7,246.80
  4. Step 4: Simplify right side
    8,772.62x = 95,788,963.31
  5. Step 5: Solve for x
    x = 95,788,963.31/8,772.62
  6. Step 6: Final answer
    x = 10,919.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.