Home / 2,191.20-3,022.74-1,306.26

Finding the Fourth Proportional to 2,191.20, 3,022.74 and 1,306.26

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Solution

The fourth proportional to 2,191.20, 3,022.74 and 1,306.26 is: 1,801.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.20 : 3,022.74 = 1,306.26 : x
  2. Step 2: Convert to fraction form
    2,191.20/3,022.74 = 1,306.26/x
  3. Step 3: Cross multiply
    2,191.20x = 3,022.74 × 1,306.26
  4. Step 4: Simplify right side
    2,191.20x = 3,948,484.35
  5. Step 5: Solve for x
    x = 3,948,484.35/2,191.20
  6. Step 6: Final answer
    x = 1,801.97

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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.