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Finding the Fourth Proportional to 7,190.80, 10,787.28 and 2,260.88

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Solution

The fourth proportional to 7,190.80, 10,787.28 and 2,260.88 is: 3,391.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,190.80 : 10,787.28 = 2,260.88 : x
  2. Step 2: Convert to fraction form
    7,190.80/10,787.28 = 2,260.88/x
  3. Step 3: Cross multiply
    7,190.80x = 10,787.28 × 2,260.88
  4. Step 4: Simplify right side
    7,190.80x = 24,388,745.61
  5. Step 5: Solve for x
    x = 24,388,745.61/7,190.80
  6. Step 6: Final answer
    x = 3,391.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.