Home / 7,816.29-11,724.39-1,972.88

Finding the Fourth Proportional to 7,816.29, 11,724.39 and 1,972.88

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Solution

The fourth proportional to 7,816.29, 11,724.39 and 1,972.88 is: 2,959.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,816.29 : 11,724.39 = 1,972.88 : x
  2. Step 2: Convert to fraction form
    7,816.29/11,724.39 = 1,972.88/x
  3. Step 3: Cross multiply
    7,816.29x = 11,724.39 × 1,972.88
  4. Step 4: Simplify right side
    7,816.29x = 23,130,755.92
  5. Step 5: Solve for x
    x = 23,130,755.92/7,816.29
  6. Step 6: Final answer
    x = 2,959.30

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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.