Home / 5,151.30-7,730.55-2,231.70

Finding the Fourth Proportional to 5,151.30, 7,730.55 and 2,231.70

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Solution

The fourth proportional to 5,151.30, 7,730.55 and 2,231.70 is: 3,349.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,151.30 : 7,730.55 = 2,231.70 : x
  2. Step 2: Convert to fraction form
    5,151.30/7,730.55 = 2,231.70/x
  3. Step 3: Cross multiply
    5,151.30x = 7,730.55 × 2,231.70
  4. Step 4: Simplify right side
    5,151.30x = 17,252,268.44
  5. Step 5: Solve for x
    x = 17,252,268.44/5,151.30
  6. Step 6: Final answer
    x = 3,349.11

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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.