Home / 2,581.20-3,865.68-1,964.16

Finding the Fourth Proportional to 2,581.20, 3,865.68 and 1,964.16

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Solution

The fourth proportional to 2,581.20, 3,865.68 and 1,964.16 is: 2,941.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,581.20 : 3,865.68 = 1,964.16 : x
  2. Step 2: Convert to fraction form
    2,581.20/3,865.68 = 1,964.16/x
  3. Step 3: Cross multiply
    2,581.20x = 3,865.68 × 1,964.16
  4. Step 4: Simplify right side
    2,581.20x = 7,592,814.03
  5. Step 5: Solve for x
    x = 7,592,814.03/2,581.20
  6. Step 6: Final answer
    x = 2,941.58

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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.