Home / 2,217.87-3,060.80-1,223.37

Finding the Fourth Proportional to 2,217.87, 3,060.80 and 1,223.37

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Solution

The fourth proportional to 2,217.87, 3,060.80 and 1,223.37 is: 1,688.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.87 : 3,060.80 = 1,223.37 : x
  2. Step 2: Convert to fraction form
    2,217.87/3,060.80 = 1,223.37/x
  3. Step 3: Cross multiply
    2,217.87x = 3,060.80 × 1,223.37
  4. Step 4: Simplify right side
    2,217.87x = 3,744,469.48
  5. Step 5: Solve for x
    x = 3,744,469.48/2,217.87
  6. Step 6: Final answer
    x = 1,688.32

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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.