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Finding the Fourth Proportional to 2,958.49, 4,437.24 and 878.47

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Solution

The fourth proportional to 2,958.49, 4,437.24 and 878.47 is: 1,317.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,958.49 : 4,437.24 = 878.47 : x
  2. Step 2: Convert to fraction form
    2,958.49/4,437.24 = 878.47/x
  3. Step 3: Cross multiply
    2,958.49x = 4,437.24 × 878.47
  4. Step 4: Simplify right side
    2,958.49x = 3,897,982.22
  5. Step 5: Solve for x
    x = 3,897,982.22/2,958.49
  6. Step 6: Final answer
    x = 1,317.56

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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.