Home / 3,131.38-4,321.09-1,734.18

Finding the Fourth Proportional to 3,131.38, 4,321.09 and 1,734.18

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Solution

The fourth proportional to 3,131.38, 4,321.09 and 1,734.18 is: 2,393.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.38 : 4,321.09 = 1,734.18 : x
  2. Step 2: Convert to fraction form
    3,131.38/4,321.09 = 1,734.18/x
  3. Step 3: Cross multiply
    3,131.38x = 4,321.09 × 1,734.18
  4. Step 4: Simplify right side
    3,131.38x = 7,493,547.86
  5. Step 5: Solve for x
    x = 7,493,547.86/3,131.38
  6. Step 6: Final answer
    x = 2,393.05

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Half 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.