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Finding the Fourth Proportional to 5,789.28, 7,987.44 and 3,305.28

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Solution

The fourth proportional to 5,789.28, 7,987.44 and 3,305.28 is: 4,560.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,789.28 : 7,987.44 = 3,305.28 : x
  2. Step 2: Convert to fraction form
    5,789.28/7,987.44 = 3,305.28/x
  3. Step 3: Cross multiply
    5,789.28x = 7,987.44 × 3,305.28
  4. Step 4: Simplify right side
    5,789.28x = 26,400,725.68
  5. Step 5: Solve for x
    x = 26,400,725.68/5,789.28
  6. Step 6: Final answer
    x = 4,560.28

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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.