Home / 3,805.20-5,251.44-2,742.56

Finding the Fourth Proportional to 3,805.20, 5,251.44 and 2,742.56

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Solution

The fourth proportional to 3,805.20, 5,251.44 and 2,742.56 is: 3,784.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,805.20 : 5,251.44 = 2,742.56 : x
  2. Step 2: Convert to fraction form
    3,805.20/5,251.44 = 2,742.56/x
  3. Step 3: Cross multiply
    3,805.20x = 5,251.44 × 2,742.56
  4. Step 4: Simplify right side
    3,805.20x = 14,402,389.29
  5. Step 5: Solve for x
    x = 14,402,389.29/3,805.20
  6. Step 6: Final answer
    x = 3,784.92

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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.