Home / 5,175.96-7,142.61-2,818.11

Finding the Fourth Proportional to 5,175.96, 7,142.61 and 2,818.11

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Solution

The fourth proportional to 5,175.96, 7,142.61 and 2,818.11 is: 3,888.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,175.96 : 7,142.61 = 2,818.11 : x
  2. Step 2: Convert to fraction form
    5,175.96/7,142.61 = 2,818.11/x
  3. Step 3: Cross multiply
    5,175.96x = 7,142.61 × 2,818.11
  4. Step 4: Simplify right side
    5,175.96x = 20,128,624.95
  5. Step 5: Solve for x
    x = 20,128,624.95/5,175.96
  6. Step 6: Final answer
    x = 3,888.87

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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.