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Finding the Fourth Proportional to 5,757.45, 8,640.79 and 2,984.92

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Solution

The fourth proportional to 5,757.45, 8,640.79 and 2,984.92 is: 4,479.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,757.45 : 8,640.79 = 2,984.92 : x
  2. Step 2: Convert to fraction form
    5,757.45/8,640.79 = 2,984.92/x
  3. Step 3: Cross multiply
    5,757.45x = 8,640.79 × 2,984.92
  4. Step 4: Simplify right side
    5,757.45x = 25,792,054.61
  5. Step 5: Solve for x
    x = 25,792,054.61/5,757.45
  6. Step 6: Final answer
    x = 4,479.77

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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.