Home / 1,691.20-2,340.24-1,442.12

Finding the Fourth Proportional to 1,691.20, 2,340.24 and 1,442.12

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Solution

The fourth proportional to 1,691.20, 2,340.24 and 1,442.12 is: 1,995.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,691.20 : 2,340.24 = 1,442.12 : x
  2. Step 2: Convert to fraction form
    1,691.20/2,340.24 = 1,442.12/x
  3. Step 3: Cross multiply
    1,691.20x = 2,340.24 × 1,442.12
  4. Step 4: Simplify right side
    1,691.20x = 3,374,906.91
  5. Step 5: Solve for x
    x = 3,374,906.91/1,691.20
  6. Step 6: Final answer
    x = 1,995.57

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1.5x scale

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.