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Finding the Fourth Proportional to 5,260.76, 7,891.99 and 1,974.11

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Solution

The fourth proportional to 5,260.76, 7,891.99 and 1,974.11 is: 2,961.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,260.76 : 7,891.99 = 1,974.11 : x
  2. Step 2: Convert to fraction form
    5,260.76/7,891.99 = 1,974.11/x
  3. Step 3: Cross multiply
    5,260.76x = 7,891.99 × 1,974.11
  4. Step 4: Simplify right side
    5,260.76x = 15,579,659.16
  5. Step 5: Solve for x
    x = 15,579,659.16/5,260.76
  6. Step 6: Final answer
    x = 2,961.48

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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.