Home / 2,218.40-3,325.20-1,177.72

Finding the Fourth Proportional to 2,218.40, 3,325.20 and 1,177.72

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Solution

The fourth proportional to 2,218.40, 3,325.20 and 1,177.72 is: 1,765.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.40 : 3,325.20 = 1,177.72 : x
  2. Step 2: Convert to fraction form
    2,218.40/3,325.20 = 1,177.72/x
  3. Step 3: Cross multiply
    2,218.40x = 3,325.20 × 1,177.72
  4. Step 4: Simplify right side
    2,218.40x = 3,916,154.54
  5. Step 5: Solve for x
    x = 3,916,154.54/2,218.40
  6. Step 6: Final answer
    x = 1,765.31

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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.