Home / 1,228.30-1,842.87-579.07

Finding the Fourth Proportional to 1,228.30, 1,842.87 and 579.07

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Solution

The fourth proportional to 1,228.30, 1,842.87 and 579.07 is: 868.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228.30 : 1,842.87 = 579.07 : x
  2. Step 2: Convert to fraction form
    1,228.30/1,842.87 = 579.07/x
  3. Step 3: Cross multiply
    1,228.30x = 1,842.87 × 579.07
  4. Step 4: Simplify right side
    1,228.30x = 1,067,150.73
  5. Step 5: Solve for x
    x = 1,067,150.73/1,228.30
  6. Step 6: Final answer
    x = 868.80

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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.