Home / 2,217.86-3,060.65-1,223.11

Finding the Fourth Proportional to 2,217.86, 3,060.65 and 1,223.11

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Solution

The fourth proportional to 2,217.86, 3,060.65 and 1,223.11 is: 1,687.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.86 : 3,060.65 = 1,223.11 : x
  2. Step 2: Convert to fraction form
    2,217.86/3,060.65 = 1,223.11/x
  3. Step 3: Cross multiply
    2,217.86x = 3,060.65 × 1,223.11
  4. Step 4: Simplify right side
    2,217.86x = 3,743,505.51
  5. Step 5: Solve for x
    x = 3,743,505.51/2,217.86
  6. Step 6: Final answer
    x = 1,687.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.