Home / 2,218.17-3,328.17-1,122.87

Finding the Fourth Proportional to 2,218.17, 3,328.17 and 1,122.87

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Solution

The fourth proportional to 2,218.17, 3,328.17 and 1,122.87 is: 1,684.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.17 : 3,328.17 = 1,122.87 : x
  2. Step 2: Convert to fraction form
    2,218.17/3,328.17 = 1,122.87/x
  3. Step 3: Cross multiply
    2,218.17x = 3,328.17 × 1,122.87
  4. Step 4: Simplify right side
    2,218.17x = 3,737,102.25
  5. Step 5: Solve for x
    x = 3,737,102.25/2,218.17
  6. Step 6: Final answer
    x = 1,684.77

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1.5x scale

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.