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Finding the Fourth Proportional to 3,920.92, 5,883.28 and 1,729.38

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Solution

The fourth proportional to 3,920.92, 5,883.28 and 1,729.38 is: 2,594.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.92 : 5,883.28 = 1,729.38 : x
  2. Step 2: Convert to fraction form
    3,920.92/5,883.28 = 1,729.38/x
  3. Step 3: Cross multiply
    3,920.92x = 5,883.28 × 1,729.38
  4. Step 4: Simplify right side
    3,920.92x = 10,174,426.77
  5. Step 5: Solve for x
    x = 10,174,426.77/3,920.92
  6. Step 6: Final answer
    x = 2,594.91

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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.