Home / 2,921.12-4,380.92-841.14

Finding the Fourth Proportional to 2,921.12, 4,380.92 and 841.14

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Solution

The fourth proportional to 2,921.12, 4,380.92 and 841.14 is: 1,261.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.12 : 4,380.92 = 841.14 : x
  2. Step 2: Convert to fraction form
    2,921.12/4,380.92 = 841.14/x
  3. Step 3: Cross multiply
    2,921.12x = 4,380.92 × 841.14
  4. Step 4: Simplify right side
    2,921.12x = 3,684,967.05
  5. Step 5: Solve for x
    x = 3,684,967.05/2,921.12
  6. Step 6: Final answer
    x = 1,261.49

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.