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Finding the Fourth Proportional to 2,723.97, 4,086.10 and 776.02

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Solution

The fourth proportional to 2,723.97, 4,086.10 and 776.02 is: 1,164.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,723.97 : 4,086.10 = 776.02 : x
  2. Step 2: Convert to fraction form
    2,723.97/4,086.10 = 776.02/x
  3. Step 3: Cross multiply
    2,723.97x = 4,086.10 × 776.02
  4. Step 4: Simplify right side
    2,723.97x = 3,170,886.08
  5. Step 5: Solve for x
    x = 3,170,886.08/2,723.97
  6. Step 6: Final answer
    x = 1,164.07

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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.