Home / 1,909.73-2,862.55-1,251.36

Finding the Fourth Proportional to 1,909.73, 2,862.55 and 1,251.36

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Solution

The fourth proportional to 1,909.73, 2,862.55 and 1,251.36 is: 1,875.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.73 : 2,862.55 = 1,251.36 : x
  2. Step 2: Convert to fraction form
    1,909.73/2,862.55 = 1,251.36/x
  3. Step 3: Cross multiply
    1,909.73x = 2,862.55 × 1,251.36
  4. Step 4: Simplify right side
    1,909.73x = 3,582,070.28
  5. Step 5: Solve for x
    x = 3,582,070.28/1,909.73
  6. Step 6: Final answer
    x = 1,875.69

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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.