Home / 1,926.12-2,651.19-1,427.90

Finding the Fourth Proportional to 1,926.12, 2,651.19 and 1,427.90

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Solution

The fourth proportional to 1,926.12, 2,651.19 and 1,427.90 is: 1,965.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,926.12 : 2,651.19 = 1,427.90 : x
  2. Step 2: Convert to fraction form
    1,926.12/2,651.19 = 1,427.90/x
  3. Step 3: Cross multiply
    1,926.12x = 2,651.19 × 1,427.90
  4. Step 4: Simplify right side
    1,926.12x = 3,785,634.20
  5. Step 5: Solve for x
    x = 3,785,634.20/1,926.12
  6. Step 6: Final answer
    x = 1,965.42

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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.