Home / 3,175.76-4,382.53-1,778.51

Finding the Fourth Proportional to 3,175.76, 4,382.53 and 1,778.51

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Solution

The fourth proportional to 3,175.76, 4,382.53 and 1,778.51 is: 2,454.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,175.76 : 4,382.53 = 1,778.51 : x
  2. Step 2: Convert to fraction form
    3,175.76/4,382.53 = 1,778.51/x
  3. Step 3: Cross multiply
    3,175.76x = 4,382.53 × 1,778.51
  4. Step 4: Simplify right side
    3,175.76x = 7,794,379.94
  5. Step 5: Solve for x
    x = 7,794,379.94/3,175.76
  6. Step 6: Final answer
    x = 2,454.33

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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.