Home / 1,724.14-2,379.35-938.19

Finding the Fourth Proportional to 1,724.14, 2,379.35 and 938.19

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Solution

The fourth proportional to 1,724.14, 2,379.35 and 938.19 is: 1,294.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,724.14 : 2,379.35 = 938.19 : x
  2. Step 2: Convert to fraction form
    1,724.14/2,379.35 = 938.19/x
  3. Step 3: Cross multiply
    1,724.14x = 2,379.35 × 938.19
  4. Step 4: Simplify right side
    1,724.14x = 2,232,282.38
  5. Step 5: Solve for x
    x = 2,232,282.38/1,724.14
  6. Step 6: Final answer
    x = 1,294.72

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Half scale
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Double scale
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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.