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Finding the Fourth Proportional to 3,921.74, 5,882.58 and 960.20

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Solution

The fourth proportional to 3,921.74, 5,882.58 and 960.20 is: 1,440.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.74 : 5,882.58 = 960.20 : x
  2. Step 2: Convert to fraction form
    3,921.74/5,882.58 = 960.20/x
  3. Step 3: Cross multiply
    3,921.74x = 5,882.58 × 960.20
  4. Step 4: Simplify right side
    3,921.74x = 5,648,423.90
  5. Step 5: Solve for x
    x = 5,648,423.90/3,921.74
  6. Step 6: Final answer
    x = 1,440.28

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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.