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Finding the Fourth Proportional to 8,858.68, 13,251.54 and 7,280.92

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Solution

The fourth proportional to 8,858.68, 13,251.54 and 7,280.92 is: 10,891.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,858.68 : 13,251.54 = 7,280.92 : x
  2. Step 2: Convert to fraction form
    8,858.68/13,251.54 = 7,280.92/x
  3. Step 3: Cross multiply
    8,858.68x = 13,251.54 × 7,280.92
  4. Step 4: Simplify right side
    8,858.68x = 96,483,402.62
  5. Step 5: Solve for x
    x = 96,483,402.62/8,858.68
  6. Step 6: Final answer
    x = 10,891.40

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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.