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Finding the Fourth Proportional to 3,387.93, 5,081.86 and 922.71

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Solution

The fourth proportional to 3,387.93, 5,081.86 and 922.71 is: 1,384.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.93 : 5,081.86 = 922.71 : x
  2. Step 2: Convert to fraction form
    3,387.93/5,081.86 = 922.71/x
  3. Step 3: Cross multiply
    3,387.93x = 5,081.86 × 922.71
  4. Step 4: Simplify right side
    3,387.93x = 4,689,053.02
  5. Step 5: Solve for x
    x = 4,689,053.02/3,387.93
  6. Step 6: Final answer
    x = 1,384.05

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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.