Home / 7,990.29-11,985.37-2,443.61

Finding the Fourth Proportional to 7,990.29, 11,985.37 and 2,443.61

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Solution

The fourth proportional to 7,990.29, 11,985.37 and 2,443.61 is: 3,665.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.29 : 11,985.37 = 2,443.61 : x
  2. Step 2: Convert to fraction form
    7,990.29/11,985.37 = 2,443.61/x
  3. Step 3: Cross multiply
    7,990.29x = 11,985.37 × 2,443.61
  4. Step 4: Simplify right side
    7,990.29x = 29,287,593.84
  5. Step 5: Solve for x
    x = 29,287,593.84/7,990.29
  6. Step 6: Final answer
    x = 3,665.40

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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.