Home / 3,175.44-4,372.45-2,816.20

Finding the Fourth Proportional to 3,175.44, 4,372.45 and 2,816.20

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Solution

The fourth proportional to 3,175.44, 4,372.45 and 2,816.20 is: 3,877.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,175.44 : 4,372.45 = 2,816.20 : x
  2. Step 2: Convert to fraction form
    3,175.44/4,372.45 = 2,816.20/x
  3. Step 3: Cross multiply
    3,175.44x = 4,372.45 × 2,816.20
  4. Step 4: Simplify right side
    3,175.44x = 12,313,693.69
  5. Step 5: Solve for x
    x = 12,313,693.69/3,175.44
  6. Step 6: Final answer
    x = 3,877.79

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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.