Home / 2,512.96-3,765.76-1,691.20

Finding the Fourth Proportional to 2,512.96, 3,765.76 and 1,691.20

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Solution

The fourth proportional to 2,512.96, 3,765.76 and 1,691.20 is: 2,534.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,512.96 : 3,765.76 = 1,691.20 : x
  2. Step 2: Convert to fraction form
    2,512.96/3,765.76 = 1,691.20/x
  3. Step 3: Cross multiply
    2,512.96x = 3,765.76 × 1,691.20
  4. Step 4: Simplify right side
    2,512.96x = 6,368,653.31
  5. Step 5: Solve for x
    x = 6,368,653.31/2,512.96
  6. Step 6: Final answer
    x = 2,534.32

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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.