Home / 5,278.57-7,910.99-2,154.91

Finding the Fourth Proportional to 5,278.57, 7,910.99 and 2,154.91

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Solution

The fourth proportional to 5,278.57, 7,910.99 and 2,154.91 is: 3,229.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.57 : 7,910.99 = 2,154.91 : x
  2. Step 2: Convert to fraction form
    5,278.57/7,910.99 = 2,154.91/x
  3. Step 3: Cross multiply
    5,278.57x = 7,910.99 × 2,154.91
  4. Step 4: Simplify right side
    5,278.57x = 17,047,471.46
  5. Step 5: Solve for x
    x = 17,047,471.46/5,278.57
  6. Step 6: Final answer
    x = 3,229.56

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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.