Home / 2,785.23-4,179.29-1,691.55

Finding the Fourth Proportional to 2,785.23, 4,179.29 and 1,691.55

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Solution

The fourth proportional to 2,785.23, 4,179.29 and 1,691.55 is: 2,538.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785.23 : 4,179.29 = 1,691.55 : x
  2. Step 2: Convert to fraction form
    2,785.23/4,179.29 = 1,691.55/x
  3. Step 3: Cross multiply
    2,785.23x = 4,179.29 × 1,691.55
  4. Step 4: Simplify right side
    2,785.23x = 7,069,469.54
  5. Step 5: Solve for x
    x = 7,069,469.54/2,785.23
  6. Step 6: Final answer
    x = 2,538.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.