Home / 1,284.32-1,773.43-1,225.24

Finding the Fourth Proportional to 1,284.32, 1,773.43 and 1,225.24

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Solution

The fourth proportional to 1,284.32, 1,773.43 and 1,225.24 is: 1,691.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284.32 : 1,773.43 = 1,225.24 : x
  2. Step 2: Convert to fraction form
    1,284.32/1,773.43 = 1,225.24/x
  3. Step 3: Cross multiply
    1,284.32x = 1,773.43 × 1,225.24
  4. Step 4: Simplify right side
    1,284.32x = 2,172,862.38
  5. Step 5: Solve for x
    x = 2,172,862.38/1,284.32
  6. Step 6: Final answer
    x = 1,691.85

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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.