Home / 1,400.92-2,101.98-579.79

Finding the Fourth Proportional to 1,400.92, 2,101.98 and 579.79

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Solution

The fourth proportional to 1,400.92, 2,101.98 and 579.79 is: 869.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400.92 : 2,101.98 = 579.79 : x
  2. Step 2: Convert to fraction form
    1,400.92/2,101.98 = 579.79/x
  3. Step 3: Cross multiply
    1,400.92x = 2,101.98 × 579.79
  4. Step 4: Simplify right side
    1,400.92x = 1,218,693.58
  5. Step 5: Solve for x
    x = 1,218,693.58/1,400.92
  6. Step 6: Final answer
    x = 869.93

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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.