Home / 2,217.76-3,060.48-1,223.02

Finding the Fourth Proportional to 2,217.76, 3,060.48 and 1,223.02

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Solution

The fourth proportional to 2,217.76, 3,060.48 and 1,223.02 is: 1,687.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.76 : 3,060.48 = 1,223.02 : x
  2. Step 2: Convert to fraction form
    2,217.76/3,060.48 = 1,223.02/x
  3. Step 3: Cross multiply
    2,217.76x = 3,060.48 × 1,223.02
  4. Step 4: Simplify right side
    2,217.76x = 3,743,012.95
  5. Step 5: Solve for x
    x = 3,743,012.95/2,217.76
  6. Step 6: Final answer
    x = 1,687.75

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1.5x scale

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.