Home / 3,115.38-4,299.03-1,718.13

Finding the Fourth Proportional to 3,115.38, 4,299.03 and 1,718.13

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Solution

The fourth proportional to 3,115.38, 4,299.03 and 1,718.13 is: 2,370.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.38 : 4,299.03 = 1,718.13 : x
  2. Step 2: Convert to fraction form
    3,115.38/4,299.03 = 1,718.13/x
  3. Step 3: Cross multiply
    3,115.38x = 4,299.03 × 1,718.13
  4. Step 4: Simplify right side
    3,115.38x = 7,386,292.41
  5. Step 5: Solve for x
    x = 7,386,292.41/3,115.38
  6. Step 6: Final answer
    x = 2,370.91

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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.