Home / 2,175.20-3,246.88-1,869.02

Finding the Fourth Proportional to 2,175.20, 3,246.88 and 1,869.02

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Solution

The fourth proportional to 2,175.20, 3,246.88 and 1,869.02 is: 2,789.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,175.20 : 3,246.88 = 1,869.02 : x
  2. Step 2: Convert to fraction form
    2,175.20/3,246.88 = 1,869.02/x
  3. Step 3: Cross multiply
    2,175.20x = 3,246.88 × 1,869.02
  4. Step 4: Simplify right side
    2,175.20x = 6,068,483.66
  5. Step 5: Solve for x
    x = 6,068,483.66/2,175.20
  6. Step 6: Final answer
    x = 2,789.85

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.