Home / 5,175.97-7,142.82-2,818.13

Finding the Fourth Proportional to 5,175.97, 7,142.82 and 2,818.13

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Solution

The fourth proportional to 5,175.97, 7,142.82 and 2,818.13 is: 3,889.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,175.97 : 7,142.82 = 2,818.13 : x
  2. Step 2: Convert to fraction form
    5,175.97/7,142.82 = 2,818.13/x
  3. Step 3: Cross multiply
    5,175.97x = 7,142.82 × 2,818.13
  4. Step 4: Simplify right side
    5,175.97x = 20,129,349.04
  5. Step 5: Solve for x
    x = 20,129,349.04/5,175.97
  6. Step 6: Final answer
    x = 3,889.00

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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.