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Finding the Fourth Proportional to 2,162.57, 3,244.70 and 864.95

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Solution

The fourth proportional to 2,162.57, 3,244.70 and 864.95 is: 1,297.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,162.57 : 3,244.70 = 864.95 : x
  2. Step 2: Convert to fraction form
    2,162.57/3,244.70 = 864.95/x
  3. Step 3: Cross multiply
    2,162.57x = 3,244.70 × 864.95
  4. Step 4: Simplify right side
    2,162.57x = 2,806,489.20
  5. Step 5: Solve for x
    x = 2,806,489.20/2,162.57
  6. Step 6: Final answer
    x = 1,297.76

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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.