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Finding the Fourth Proportional to 2,612.57, 3,918.85 and 881.19

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Solution

The fourth proportional to 2,612.57, 3,918.85 and 881.19 is: 1,321.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,612.57 : 3,918.85 = 881.19 : x
  2. Step 2: Convert to fraction form
    2,612.57/3,918.85 = 881.19/x
  3. Step 3: Cross multiply
    2,612.57x = 3,918.85 × 881.19
  4. Step 4: Simplify right side
    2,612.57x = 3,453,251.43
  5. Step 5: Solve for x
    x = 3,453,251.43/2,612.57
  6. Step 6: Final answer
    x = 1,321.79

Related Problems

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Half scale
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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.