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Finding the Fourth Proportional to 4,889.91, 6,746.89 and 2,765.49

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Solution

The fourth proportional to 4,889.91, 6,746.89 and 2,765.49 is: 3,815.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,889.91 : 6,746.89 = 2,765.49 : x
  2. Step 2: Convert to fraction form
    4,889.91/6,746.89 = 2,765.49/x
  3. Step 3: Cross multiply
    4,889.91x = 6,746.89 × 2,765.49
  4. Step 4: Simplify right side
    4,889.91x = 18,658,456.83
  5. Step 5: Solve for x
    x = 18,658,456.83/4,889.91
  6. Step 6: Final answer
    x = 3,815.71

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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.