Home / 1,983.12-2,972.62-1,008.68

Finding the Fourth Proportional to 1,983.12, 2,972.62 and 1,008.68

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Solution

The fourth proportional to 1,983.12, 2,972.62 and 1,008.68 is: 1,511.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983.12 : 2,972.62 = 1,008.68 : x
  2. Step 2: Convert to fraction form
    1,983.12/2,972.62 = 1,008.68/x
  3. Step 3: Cross multiply
    1,983.12x = 2,972.62 × 1,008.68
  4. Step 4: Simplify right side
    1,983.12x = 2,998,422.34
  5. Step 5: Solve for x
    x = 2,998,422.34/1,983.12
  6. Step 6: Final answer
    x = 1,511.97

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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.