Home / 2,539.12-3,808.68-1,428.61

Finding the Fourth Proportional to 2,539.12, 3,808.68 and 1,428.61

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Solution

The fourth proportional to 2,539.12, 3,808.68 and 1,428.61 is: 2,142.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,539.12 : 3,808.68 = 1,428.61 : x
  2. Step 2: Convert to fraction form
    2,539.12/3,808.68 = 1,428.61/x
  3. Step 3: Cross multiply
    2,539.12x = 3,808.68 × 1,428.61
  4. Step 4: Simplify right side
    2,539.12x = 5,441,118.33
  5. Step 5: Solve for x
    x = 5,441,118.33/2,539.12
  6. Step 6: Final answer
    x = 2,142.92

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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.