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Finding the Fourth Proportional to 5,879.12, 8,821.31 and 2,959.47

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Solution

The fourth proportional to 5,879.12, 8,821.31 and 2,959.47 is: 4,440.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,879.12 : 8,821.31 = 2,959.47 : x
  2. Step 2: Convert to fraction form
    5,879.12/8,821.31 = 2,959.47/x
  3. Step 3: Cross multiply
    5,879.12x = 8,821.31 × 2,959.47
  4. Step 4: Simplify right side
    5,879.12x = 26,106,387.51
  5. Step 5: Solve for x
    x = 26,106,387.51/5,879.12
  6. Step 6: Final answer
    x = 4,440.53

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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.