Home / 10,116.94-15,175.34-2,720.78

Finding the Fourth Proportional to 10,116.94, 15,175.34 and 2,720.78

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Solution

The fourth proportional to 10,116.94, 15,175.34 and 2,720.78 is: 4,081.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,116.94 : 15,175.34 = 2,720.78 : x
  2. Step 2: Convert to fraction form
    10,116.94/15,175.34 = 2,720.78/x
  3. Step 3: Cross multiply
    10,116.94x = 15,175.34 × 2,720.78
  4. Step 4: Simplify right side
    10,116.94x = 41,288,761.57
  5. Step 5: Solve for x
    x = 41,288,761.57/10,116.94
  6. Step 6: Final answer
    x = 4,081.15

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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.