Home / 3,731.76-5,151.60-2,159.28

Finding the Fourth Proportional to 3,731.76, 5,151.60 and 2,159.28

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Solution

The fourth proportional to 3,731.76, 5,151.60 and 2,159.28 is: 2,980.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,731.76 : 5,151.60 = 2,159.28 : x
  2. Step 2: Convert to fraction form
    3,731.76/5,151.60 = 2,159.28/x
  3. Step 3: Cross multiply
    3,731.76x = 5,151.60 × 2,159.28
  4. Step 4: Simplify right side
    3,731.76x = 11,123,746.85
  5. Step 5: Solve for x
    x = 11,123,746.85/3,731.76
  6. Step 6: Final answer
    x = 2,980.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.