Home / 2,118.30-3,177.30-732.18

Finding the Fourth Proportional to 2,118.30, 3,177.30 and 732.18

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Solution

The fourth proportional to 2,118.30, 3,177.30 and 732.18 is: 1,098.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.30 : 3,177.30 = 732.18 : x
  2. Step 2: Convert to fraction form
    2,118.30/3,177.30 = 732.18/x
  3. Step 3: Cross multiply
    2,118.30x = 3,177.30 × 732.18
  4. Step 4: Simplify right side
    2,118.30x = 2,326,355.51
  5. Step 5: Solve for x
    x = 2,326,355.51/2,118.30
  6. Step 6: Final answer
    x = 1,098.22

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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.