Home / 2,631.90-3,947.23-1,170.25

Finding the Fourth Proportional to 2,631.90, 3,947.23 and 1,170.25

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Solution

The fourth proportional to 2,631.90, 3,947.23 and 1,170.25 is: 1,755.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631.90 : 3,947.23 = 1,170.25 : x
  2. Step 2: Convert to fraction form
    2,631.90/3,947.23 = 1,170.25/x
  3. Step 3: Cross multiply
    2,631.90x = 3,947.23 × 1,170.25
  4. Step 4: Simplify right side
    2,631.90x = 4,619,245.91
  5. Step 5: Solve for x
    x = 4,619,245.91/2,631.90
  6. Step 6: Final answer
    x = 1,755.10

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.