Home / 2,447.30-3,670.20-691.85

Finding the Fourth Proportional to 2,447.30, 3,670.20 and 691.85

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Solution

The fourth proportional to 2,447.30, 3,670.20 and 691.85 is: 1,037.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,447.30 : 3,670.20 = 691.85 : x
  2. Step 2: Convert to fraction form
    2,447.30/3,670.20 = 691.85/x
  3. Step 3: Cross multiply
    2,447.30x = 3,670.20 × 691.85
  4. Step 4: Simplify right side
    2,447.30x = 2,539,237.05
  5. Step 5: Solve for x
    x = 2,539,237.05/2,447.30
  6. Step 6: Final answer
    x = 1,037.57

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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.