Home / 1,423.15-2,122.17-1,372.39

Finding the Fourth Proportional to 1,423.15, 2,122.17 and 1,372.39

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Solution

The fourth proportional to 1,423.15, 2,122.17 and 1,372.39 is: 2,046.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423.15 : 2,122.17 = 1,372.39 : x
  2. Step 2: Convert to fraction form
    1,423.15/2,122.17 = 1,372.39/x
  3. Step 3: Cross multiply
    1,423.15x = 2,122.17 × 1,372.39
  4. Step 4: Simplify right side
    1,423.15x = 2,912,441.46
  5. Step 5: Solve for x
    x = 2,912,441.46/1,423.15
  6. Step 6: Final answer
    x = 2,046.48

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.