Home / 2,118.36-3,177.60-579.36

Finding the Fourth Proportional to 2,118.36, 3,177.60 and 579.36

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Solution

The fourth proportional to 2,118.36, 3,177.60 and 579.36 is: 869.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.36 : 3,177.60 = 579.36 : x
  2. Step 2: Convert to fraction form
    2,118.36/3,177.60 = 579.36/x
  3. Step 3: Cross multiply
    2,118.36x = 3,177.60 × 579.36
  4. Step 4: Simplify right side
    2,118.36x = 1,840,974.34
  5. Step 5: Solve for x
    x = 1,840,974.34/2,118.36
  6. Step 6: Final answer
    x = 869.06

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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.