Home / 3,144.88-4,718.83-1,389.66

Finding the Fourth Proportional to 3,144.88, 4,718.83 and 1,389.66

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Solution

The fourth proportional to 3,144.88, 4,718.83 and 1,389.66 is: 2,085.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,144.88 : 4,718.83 = 1,389.66 : x
  2. Step 2: Convert to fraction form
    3,144.88/4,718.83 = 1,389.66/x
  3. Step 3: Cross multiply
    3,144.88x = 4,718.83 × 1,389.66
  4. Step 4: Simplify right side
    3,144.88x = 6,557,554.64
  5. Step 5: Solve for x
    x = 6,557,554.64/3,144.88
  6. Step 6: Final answer
    x = 2,085.16

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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.