Home / 5,175.12-7,142.31-2,937.70

Finding the Fourth Proportional to 5,175.12, 7,142.31 and 2,937.70

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Solution

The fourth proportional to 5,175.12, 7,142.31 and 2,937.70 is: 4,054.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,175.12 : 7,142.31 = 2,937.70 : x
  2. Step 2: Convert to fraction form
    5,175.12/7,142.31 = 2,937.70/x
  3. Step 3: Cross multiply
    5,175.12x = 7,142.31 × 2,937.70
  4. Step 4: Simplify right side
    5,175.12x = 20,981,973.01
  5. Step 5: Solve for x
    x = 20,981,973.01/5,175.12
  6. Step 6: Final answer
    x = 4,054.39

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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.