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Finding the Fourth Proportional to 8,805.85, 12,155.87 and 5,268.38

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Solution

The fourth proportional to 8,805.85, 12,155.87 and 5,268.38 is: 7,272.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,805.85 : 12,155.87 = 5,268.38 : x
  2. Step 2: Convert to fraction form
    8,805.85/12,155.87 = 5,268.38/x
  3. Step 3: Cross multiply
    8,805.85x = 12,155.87 × 5,268.38
  4. Step 4: Simplify right side
    8,805.85x = 64,041,694.78
  5. Step 5: Solve for x
    x = 64,041,694.78/8,805.85
  6. Step 6: Final answer
    x = 7,272.63

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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.