Home / 2,421.12-3,631.26-960.70

Finding the Fourth Proportional to 2,421.12, 3,631.26 and 960.70

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Solution

The fourth proportional to 2,421.12, 3,631.26 and 960.70 is: 1,440.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.12 : 3,631.26 = 960.70 : x
  2. Step 2: Convert to fraction form
    2,421.12/3,631.26 = 960.70/x
  3. Step 3: Cross multiply
    2,421.12x = 3,631.26 × 960.70
  4. Step 4: Simplify right side
    2,421.12x = 3,488,551.48
  5. Step 5: Solve for x
    x = 3,488,551.48/2,421.12
  6. Step 6: Final answer
    x = 1,440.88

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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.