Home / 2,718.29-4,079.43-1,239.18

Finding the Fourth Proportional to 2,718.29, 4,079.43 and 1,239.18

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Solution

The fourth proportional to 2,718.29, 4,079.43 and 1,239.18 is: 1,859.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,718.29 : 4,079.43 = 1,239.18 : x
  2. Step 2: Convert to fraction form
    2,718.29/4,079.43 = 1,239.18/x
  3. Step 3: Cross multiply
    2,718.29x = 4,079.43 × 1,239.18
  4. Step 4: Simplify right side
    2,718.29x = 5,055,148.07
  5. Step 5: Solve for x
    x = 5,055,148.07/2,718.29
  6. Step 6: Final answer
    x = 1,859.68

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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.