Home / 1,682.30-2,322.57-1,115.61

Finding the Fourth Proportional to 1,682.30, 2,322.57 and 1,115.61

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Solution

The fourth proportional to 1,682.30, 2,322.57 and 1,115.61 is: 1,540.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,682.30 : 2,322.57 = 1,115.61 : x
  2. Step 2: Convert to fraction form
    1,682.30/2,322.57 = 1,115.61/x
  3. Step 3: Cross multiply
    1,682.30x = 2,322.57 × 1,115.61
  4. Step 4: Simplify right side
    1,682.30x = 2,591,082.32
  5. Step 5: Solve for x
    x = 2,591,082.32/1,682.30
  6. Step 6: Final answer
    x = 1,540.21

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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.