Home / 2,012.91-3,019.38-1,323.91

Finding the Fourth Proportional to 2,012.91, 3,019.38 and 1,323.91

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Solution

The fourth proportional to 2,012.91, 3,019.38 and 1,323.91 is: 1,985.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,012.91 : 3,019.38 = 1,323.91 : x
  2. Step 2: Convert to fraction form
    2,012.91/3,019.38 = 1,323.91/x
  3. Step 3: Cross multiply
    2,012.91x = 3,019.38 × 1,323.91
  4. Step 4: Simplify right side
    2,012.91x = 3,997,387.38
  5. Step 5: Solve for x
    x = 3,997,387.38/2,012.91
  6. Step 6: Final answer
    x = 1,985.87

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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.