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Finding the Fourth Proportional to 3,078.38, 4,616.13 and 886.61

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Solution

The fourth proportional to 3,078.38, 4,616.13 and 886.61 is: 1,329.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.38 : 4,616.13 = 886.61 : x
  2. Step 2: Convert to fraction form
    3,078.38/4,616.13 = 886.61/x
  3. Step 3: Cross multiply
    3,078.38x = 4,616.13 × 886.61
  4. Step 4: Simplify right side
    3,078.38x = 4,092,707.02
  5. Step 5: Solve for x
    x = 4,092,707.02/3,078.38
  6. Step 6: Final answer
    x = 1,329.50

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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.