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Finding the Fourth Proportional to 2,959.69, 4,437.99 and 879.41

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Solution

The fourth proportional to 2,959.69, 4,437.99 and 879.41 is: 1,318.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,959.69 : 4,437.99 = 879.41 : x
  2. Step 2: Convert to fraction form
    2,959.69/4,437.99 = 879.41/x
  3. Step 3: Cross multiply
    2,959.69x = 4,437.99 × 879.41
  4. Step 4: Simplify right side
    2,959.69x = 3,902,812.79
  5. Step 5: Solve for x
    x = 3,902,812.79/2,959.69
  6. Step 6: Final answer
    x = 1,318.66

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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.