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Finding the Fourth Proportional to 3,718.56, 5,572.98 and 2,786.79

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Solution

The fourth proportional to 3,718.56, 5,572.98 and 2,786.79 is: 4,176.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.56 : 5,572.98 = 2,786.79 : x
  2. Step 2: Convert to fraction form
    3,718.56/5,572.98 = 2,786.79/x
  3. Step 3: Cross multiply
    3,718.56x = 5,572.98 × 2,786.79
  4. Step 4: Simplify right side
    3,718.56x = 15,530,724.93
  5. Step 5: Solve for x
    x = 15,530,724.93/3,718.56
  6. Step 6: Final answer
    x = 4,176.54

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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.