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Finding the Fourth Proportional to 3,057.04, 4,584.80 and 865.79

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Solution

The fourth proportional to 3,057.04, 4,584.80 and 865.79 is: 1,298.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,057.04 : 4,584.80 = 865.79 : x
  2. Step 2: Convert to fraction form
    3,057.04/4,584.80 = 865.79/x
  3. Step 3: Cross multiply
    3,057.04x = 4,584.80 × 865.79
  4. Step 4: Simplify right side
    3,057.04x = 3,969,470.43
  5. Step 5: Solve for x
    x = 3,969,470.43/3,057.04
  6. Step 6: Final answer
    x = 1,298.47

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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.