Home / 2,218.64-3,320.78-1,177.16

Finding the Fourth Proportional to 2,218.64, 3,320.78 and 1,177.16

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Solution

The fourth proportional to 2,218.64, 3,320.78 and 1,177.16 is: 1,761.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.64 : 3,320.78 = 1,177.16 : x
  2. Step 2: Convert to fraction form
    2,218.64/3,320.78 = 1,177.16/x
  3. Step 3: Cross multiply
    2,218.64x = 3,320.78 × 1,177.16
  4. Step 4: Simplify right side
    2,218.64x = 3,909,089.38
  5. Step 5: Solve for x
    x = 3,909,089.38/2,218.64
  6. Step 6: Final answer
    x = 1,761.93

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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.