Home / 5,175.87-7,142.34-2,937.80

Finding the Fourth Proportional to 5,175.87, 7,142.34 and 2,937.80

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Solution

The fourth proportional to 5,175.87, 7,142.34 and 2,937.80 is: 4,053.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,175.87 : 7,142.34 = 2,937.80 : x
  2. Step 2: Convert to fraction form
    5,175.87/7,142.34 = 2,937.80/x
  3. Step 3: Cross multiply
    5,175.87x = 7,142.34 × 2,937.80
  4. Step 4: Simplify right side
    5,175.87x = 20,982,738.08
  5. Step 5: Solve for x
    x = 20,982,738.08/5,175.87
  6. Step 6: Final answer
    x = 4,053.95

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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.