Home / 2,217.85-3,060.65-1,223.16

Finding the Fourth Proportional to 2,217.85, 3,060.65 and 1,223.16

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Solution

The fourth proportional to 2,217.85, 3,060.65 and 1,223.16 is: 1,687.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.85 : 3,060.65 = 1,223.16 : x
  2. Step 2: Convert to fraction form
    2,217.85/3,060.65 = 1,223.16/x
  3. Step 3: Cross multiply
    2,217.85x = 3,060.65 × 1,223.16
  4. Step 4: Simplify right side
    2,217.85x = 3,743,664.65
  5. Step 5: Solve for x
    x = 3,743,664.65/2,217.85
  6. Step 6: Final answer
    x = 1,687.97

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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.