Home / 3,131.03-4,690.27-1,489.16

Finding the Fourth Proportional to 3,131.03, 4,690.27 and 1,489.16

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Solution

The fourth proportional to 3,131.03, 4,690.27 and 1,489.16 is: 2,230.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.03 : 4,690.27 = 1,489.16 : x
  2. Step 2: Convert to fraction form
    3,131.03/4,690.27 = 1,489.16/x
  3. Step 3: Cross multiply
    3,131.03x = 4,690.27 × 1,489.16
  4. Step 4: Simplify right side
    3,131.03x = 6,984,562.47
  5. Step 5: Solve for x
    x = 6,984,562.47/3,131.03
  6. Step 6: Final answer
    x = 2,230.76

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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.