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Finding the Fourth Proportional to 5,713.28, 7,881.84 and 3,351.32

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Solution

The fourth proportional to 5,713.28, 7,881.84 and 3,351.32 is: 4,623.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,713.28 : 7,881.84 = 3,351.32 : x
  2. Step 2: Convert to fraction form
    5,713.28/7,881.84 = 3,351.32/x
  3. Step 3: Cross multiply
    5,713.28x = 7,881.84 × 3,351.32
  4. Step 4: Simplify right side
    5,713.28x = 26,414,568.03
  5. Step 5: Solve for x
    x = 26,414,568.03/5,713.28
  6. Step 6: Final answer
    x = 4,623.36

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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.