Home / 2,718.81-4,079.51-1,331.39

Finding the Fourth Proportional to 2,718.81, 4,079.51 and 1,331.39

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Solution

The fourth proportional to 2,718.81, 4,079.51 and 1,331.39 is: 1,997.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,718.81 : 4,079.51 = 1,331.39 : x
  2. Step 2: Convert to fraction form
    2,718.81/4,079.51 = 1,331.39/x
  3. Step 3: Cross multiply
    2,718.81x = 4,079.51 × 1,331.39
  4. Step 4: Simplify right side
    2,718.81x = 5,431,418.82
  5. Step 5: Solve for x
    x = 5,431,418.82/2,718.81
  6. Step 6: Final answer
    x = 1,997.72

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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.