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Finding the Fourth Proportional to 8,757.57, 13,119.41 and 7,335.09

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Solution

The fourth proportional to 8,757.57, 13,119.41 and 7,335.09 is: 10,988.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.57 : 13,119.41 = 7,335.09 : x
  2. Step 2: Convert to fraction form
    8,757.57/13,119.41 = 7,335.09/x
  3. Step 3: Cross multiply
    8,757.57x = 13,119.41 × 7,335.09
  4. Step 4: Simplify right side
    8,757.57x = 96,232,085.90
  5. Step 5: Solve for x
    x = 96,232,085.90/8,757.57
  6. Step 6: Final answer
    x = 10,988.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.