Home / 1,909.52-2,862.30-1,129.36

Finding the Fourth Proportional to 1,909.52, 2,862.30 and 1,129.36

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Solution

The fourth proportional to 1,909.52, 2,862.30 and 1,129.36 is: 1,692.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.52 : 2,862.30 = 1,129.36 : x
  2. Step 2: Convert to fraction form
    1,909.52/2,862.30 = 1,129.36/x
  3. Step 3: Cross multiply
    1,909.52x = 2,862.30 × 1,129.36
  4. Step 4: Simplify right side
    1,909.52x = 3,232,559.97
  5. Step 5: Solve for x
    x = 3,232,559.97/1,909.52
  6. Step 6: Final answer
    x = 1,692.87

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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.