Home / 2,118.32-3,177.43-579.32

Finding the Fourth Proportional to 2,118.32, 3,177.43 and 579.32

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Solution

The fourth proportional to 2,118.32, 3,177.43 and 579.32 is: 868.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.32 : 3,177.43 = 579.32 : x
  2. Step 2: Convert to fraction form
    2,118.32/3,177.43 = 579.32/x
  3. Step 3: Cross multiply
    2,118.32x = 3,177.43 × 579.32
  4. Step 4: Simplify right side
    2,118.32x = 1,840,748.75
  5. Step 5: Solve for x
    x = 1,840,748.75/2,118.32
  6. Step 6: Final answer
    x = 868.97

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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.