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Finding the Fourth Proportional to 8,791.92, 13,189.86 and 2,948.38

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Solution

The fourth proportional to 8,791.92, 13,189.86 and 2,948.38 is: 4,423.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,791.92 : 13,189.86 = 2,948.38 : x
  2. Step 2: Convert to fraction form
    8,791.92/13,189.86 = 2,948.38/x
  3. Step 3: Cross multiply
    8,791.92x = 13,189.86 × 2,948.38
  4. Step 4: Simplify right side
    8,791.92x = 38,888,719.43
  5. Step 5: Solve for x
    x = 38,888,719.43/8,791.92
  6. Step 6: Final answer
    x = 4,423.23

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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.