Home / 3,079.64-4,619.92-1,131.69

Finding the Fourth Proportional to 3,079.64, 4,619.92 and 1,131.69

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Solution

The fourth proportional to 3,079.64, 4,619.92 and 1,131.69 is: 1,697.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,079.64 : 4,619.92 = 1,131.69 : x
  2. Step 2: Convert to fraction form
    3,079.64/4,619.92 = 1,131.69/x
  3. Step 3: Cross multiply
    3,079.64x = 4,619.92 × 1,131.69
  4. Step 4: Simplify right side
    3,079.64x = 5,228,314.44
  5. Step 5: Solve for x
    x = 5,228,314.44/3,079.64
  6. Step 6: Final answer
    x = 1,697.70

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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.