Home / 3,175.18-4,382.85-2,180.50

Finding the Fourth Proportional to 3,175.18, 4,382.85 and 2,180.50

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Solution

The fourth proportional to 3,175.18, 4,382.85 and 2,180.50 is: 3,009.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,175.18 : 4,382.85 = 2,180.50 : x
  2. Step 2: Convert to fraction form
    3,175.18/4,382.85 = 2,180.50/x
  3. Step 3: Cross multiply
    3,175.18x = 4,382.85 × 2,180.50
  4. Step 4: Simplify right side
    3,175.18x = 9,556,804.43
  5. Step 5: Solve for x
    x = 9,556,804.43/3,175.18
  6. Step 6: Final answer
    x = 3,009.85

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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.