Home / 3,175.48-4,381.46-1,778.20

Finding the Fourth Proportional to 3,175.48, 4,381.46 and 1,778.20

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Solution

The fourth proportional to 3,175.48, 4,381.46 and 1,778.20 is: 2,453.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,175.48 : 4,381.46 = 1,778.20 : x
  2. Step 2: Convert to fraction form
    3,175.48/4,381.46 = 1,778.20/x
  3. Step 3: Cross multiply
    3,175.48x = 4,381.46 × 1,778.20
  4. Step 4: Simplify right side
    3,175.48x = 7,791,112.17
  5. Step 5: Solve for x
    x = 7,791,112.17/3,175.48
  6. Step 6: Final answer
    x = 2,453.52

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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.