Home / 8,921.92-13,372.25-3,656.72

Finding the Fourth Proportional to 8,921.92, 13,372.25 and 3,656.72

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Solution

The fourth proportional to 8,921.92, 13,372.25 and 3,656.72 is: 5,480.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.92 : 13,372.25 = 3,656.72 : x
  2. Step 2: Convert to fraction form
    8,921.92/13,372.25 = 3,656.72/x
  3. Step 3: Cross multiply
    8,921.92x = 13,372.25 × 3,656.72
  4. Step 4: Simplify right side
    8,921.92x = 48,898,574.02
  5. Step 5: Solve for x
    x = 48,898,574.02/8,921.92
  6. Step 6: Final answer
    x = 5,480.72

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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.