Home / 7,257.92-10,888.48-2,640.80

Finding the Fourth Proportional to 7,257.92, 10,888.48 and 2,640.80

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Solution

The fourth proportional to 7,257.92, 10,888.48 and 2,640.80 is: 3,961.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,257.92 : 10,888.48 = 2,640.80 : x
  2. Step 2: Convert to fraction form
    7,257.92/10,888.48 = 2,640.80/x
  3. Step 3: Cross multiply
    7,257.92x = 10,888.48 × 2,640.80
  4. Step 4: Simplify right side
    7,257.92x = 28,754,297.98
  5. Step 5: Solve for x
    x = 28,754,297.98/7,257.92
  6. Step 6: Final answer
    x = 3,961.78

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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.