Home / 2,801.28-3,861.92-2,715.16

Finding the Fourth Proportional to 2,801.28, 3,861.92 and 2,715.16

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Solution

The fourth proportional to 2,801.28, 3,861.92 and 2,715.16 is: 3,743.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,801.28 : 3,861.92 = 2,715.16 : x
  2. Step 2: Convert to fraction form
    2,801.28/3,861.92 = 2,715.16/x
  3. Step 3: Cross multiply
    2,801.28x = 3,861.92 × 2,715.16
  4. Step 4: Simplify right side
    2,801.28x = 10,485,730.71
  5. Step 5: Solve for x
    x = 10,485,730.71/2,801.28
  6. Step 6: Final answer
    x = 3,743.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.