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Finding the Fourth Proportional to 5,759.39, 7,945.53 and 3,520.55

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Solution

The fourth proportional to 5,759.39, 7,945.53 and 3,520.55 is: 4,856.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,759.39 : 7,945.53 = 3,520.55 : x
  2. Step 2: Convert to fraction form
    5,759.39/7,945.53 = 3,520.55/x
  3. Step 3: Cross multiply
    5,759.39x = 7,945.53 × 3,520.55
  4. Step 4: Simplify right side
    5,759.39x = 27,972,595.91
  5. Step 5: Solve for x
    x = 27,972,595.91/5,759.39
  6. Step 6: Final answer
    x = 4,856.87

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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.