Home / 3,175.76-4,382.50-1,778.48

Finding the Fourth Proportional to 3,175.76, 4,382.50 and 1,778.48

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Solution

The fourth proportional to 3,175.76, 4,382.50 and 1,778.48 is: 2,454.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,175.76 : 4,382.50 = 1,778.48 : x
  2. Step 2: Convert to fraction form
    3,175.76/4,382.50 = 1,778.48/x
  3. Step 3: Cross multiply
    3,175.76x = 4,382.50 × 1,778.48
  4. Step 4: Simplify right side
    3,175.76x = 7,794,188.60
  5. Step 5: Solve for x
    x = 7,794,188.60/3,175.76
  6. Step 6: Final answer
    x = 2,454.28

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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.