Home / 3,131.65-4,319.72-2,014.04

Finding the Fourth Proportional to 3,131.65, 4,319.72 and 2,014.04

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Solution

The fourth proportional to 3,131.65, 4,319.72 and 2,014.04 is: 2,778.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.65 : 4,319.72 = 2,014.04 : x
  2. Step 2: Convert to fraction form
    3,131.65/4,319.72 = 2,014.04/x
  3. Step 3: Cross multiply
    3,131.65x = 4,319.72 × 2,014.04
  4. Step 4: Simplify right side
    3,131.65x = 8,700,078.80
  5. Step 5: Solve for x
    x = 8,700,078.80/3,131.65
  6. Step 6: Final answer
    x = 2,778.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.