Home / 2,118.55-3,177.83-579.55

Finding the Fourth Proportional to 2,118.55, 3,177.83 and 579.55

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Solution

The fourth proportional to 2,118.55, 3,177.83 and 579.55 is: 869.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.55 : 3,177.83 = 579.55 : x
  2. Step 2: Convert to fraction form
    2,118.55/3,177.83 = 579.55/x
  3. Step 3: Cross multiply
    2,118.55x = 3,177.83 × 579.55
  4. Step 4: Simplify right side
    2,118.55x = 1,841,711.38
  5. Step 5: Solve for x
    x = 1,841,711.38/2,118.55
  6. Step 6: Final answer
    x = 869.33

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1.5x scale

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.