Home / 1,979.96-2,972.66-1,006.76

Finding the Fourth Proportional to 1,979.96, 2,972.66 and 1,006.76

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Solution

The fourth proportional to 1,979.96, 2,972.66 and 1,006.76 is: 1,511.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.96 : 2,972.66 = 1,006.76 : x
  2. Step 2: Convert to fraction form
    1,979.96/2,972.66 = 1,006.76/x
  3. Step 3: Cross multiply
    1,979.96x = 2,972.66 × 1,006.76
  4. Step 4: Simplify right side
    1,979.96x = 2,992,755.18
  5. Step 5: Solve for x
    x = 2,992,755.18/1,979.96
  6. Step 6: Final answer
    x = 1,511.52

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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.