Home / 2,785.05-3,842.24-1,722.06

Finding the Fourth Proportional to 2,785.05, 3,842.24 and 1,722.06

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Solution

The fourth proportional to 2,785.05, 3,842.24 and 1,722.06 is: 2,375.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785.05 : 3,842.24 = 1,722.06 : x
  2. Step 2: Convert to fraction form
    2,785.05/3,842.24 = 1,722.06/x
  3. Step 3: Cross multiply
    2,785.05x = 3,842.24 × 1,722.06
  4. Step 4: Simplify right side
    2,785.05x = 6,616,559.20
  5. Step 5: Solve for x
    x = 6,616,559.20/2,785.05
  6. Step 6: Final answer
    x = 2,375.74

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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.