Home / 3,851.28-5,313.42-2,279.07

Finding the Fourth Proportional to 3,851.28, 5,313.42 and 2,279.07

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Solution

The fourth proportional to 3,851.28, 5,313.42 and 2,279.07 is: 3,144.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.28 : 5,313.42 = 2,279.07 : x
  2. Step 2: Convert to fraction form
    3,851.28/5,313.42 = 2,279.07/x
  3. Step 3: Cross multiply
    3,851.28x = 5,313.42 × 2,279.07
  4. Step 4: Simplify right side
    3,851.28x = 12,109,656.12
  5. Step 5: Solve for x
    x = 12,109,656.12/3,851.28
  6. Step 6: Final answer
    x = 3,144.32

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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.