Home / 1,724.18-2,379.39-938.22

Finding the Fourth Proportional to 1,724.18, 2,379.39 and 938.22

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Solution

The fourth proportional to 1,724.18, 2,379.39 and 938.22 is: 1,294.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,724.18 : 2,379.39 = 938.22 : x
  2. Step 2: Convert to fraction form
    1,724.18/2,379.39 = 938.22/x
  3. Step 3: Cross multiply
    1,724.18x = 2,379.39 × 938.22
  4. Step 4: Simplify right side
    1,724.18x = 2,232,391.29
  5. Step 5: Solve for x
    x = 2,232,391.29/1,724.18
  6. Step 6: Final answer
    x = 1,294.76

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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.