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Finding the Fourth Proportional to 4,889.79, 6,747.25 and 2,765.61

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Solution

The fourth proportional to 4,889.79, 6,747.25 and 2,765.61 is: 3,816.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,889.79 : 6,747.25 = 2,765.61 : x
  2. Step 2: Convert to fraction form
    4,889.79/6,747.25 = 2,765.61/x
  3. Step 3: Cross multiply
    4,889.79x = 6,747.25 × 2,765.61
  4. Step 4: Simplify right side
    4,889.79x = 18,660,262.07
  5. Step 5: Solve for x
    x = 18,660,262.07/4,889.79
  6. Step 6: Final answer
    x = 3,816.17

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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.