Home / 5,451.68-7,515.76-3,680.48

Finding the Fourth Proportional to 5,451.68, 7,515.76 and 3,680.48

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Solution

The fourth proportional to 5,451.68, 7,515.76 and 3,680.48 is: 5,073.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,451.68 : 7,515.76 = 3,680.48 : x
  2. Step 2: Convert to fraction form
    5,451.68/7,515.76 = 3,680.48/x
  3. Step 3: Cross multiply
    5,451.68x = 7,515.76 × 3,680.48
  4. Step 4: Simplify right side
    5,451.68x = 27,661,604.36
  5. Step 5: Solve for x
    x = 27,661,604.36/5,451.68
  6. Step 6: Final answer
    x = 5,073.96

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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.