Home / 2,207.20-3,040.72-1,891.44

Finding the Fourth Proportional to 2,207.20, 3,040.72 and 1,891.44

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Solution

The fourth proportional to 2,207.20, 3,040.72 and 1,891.44 is: 2,605.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,207.20 : 3,040.72 = 1,891.44 : x
  2. Step 2: Convert to fraction form
    2,207.20/3,040.72 = 1,891.44/x
  3. Step 3: Cross multiply
    2,207.20x = 3,040.72 × 1,891.44
  4. Step 4: Simplify right side
    2,207.20x = 5,751,339.44
  5. Step 5: Solve for x
    x = 5,751,339.44/2,207.20
  6. Step 6: Final answer
    x = 2,605.72

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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.