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Finding the Fourth Proportional to 2,722.16, 4,082.16 and 1,260.92

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Solution

The fourth proportional to 2,722.16, 4,082.16 and 1,260.92 is: 1,890.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,722.16 : 4,082.16 = 1,260.92 : x
  2. Step 2: Convert to fraction form
    2,722.16/4,082.16 = 1,260.92/x
  3. Step 3: Cross multiply
    2,722.16x = 4,082.16 × 1,260.92
  4. Step 4: Simplify right side
    2,722.16x = 5,147,277.19
  5. Step 5: Solve for x
    x = 5,147,277.19/2,722.16
  6. Step 6: Final answer
    x = 1,890.88

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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.