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Finding the Fourth Proportional to 5,286.20, 7,294.86 and 2,928.29

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Solution

The fourth proportional to 5,286.20, 7,294.86 and 2,928.29 is: 4,040.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,286.20 : 7,294.86 = 2,928.29 : x
  2. Step 2: Convert to fraction form
    5,286.20/7,294.86 = 2,928.29/x
  3. Step 3: Cross multiply
    5,286.20x = 7,294.86 × 2,928.29
  4. Step 4: Simplify right side
    5,286.20x = 21,361,429.12
  5. Step 5: Solve for x
    x = 21,361,429.12/5,286.20
  6. Step 6: Final answer
    x = 4,040.98

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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.