Home / 3,131.85-4,697.63-1,282.51

Finding the Fourth Proportional to 3,131.85, 4,697.63 and 1,282.51

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Solution

The fourth proportional to 3,131.85, 4,697.63 and 1,282.51 is: 1,923.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.85 : 4,697.63 = 1,282.51 : x
  2. Step 2: Convert to fraction form
    3,131.85/4,697.63 = 1,282.51/x
  3. Step 3: Cross multiply
    3,131.85x = 4,697.63 × 1,282.51
  4. Step 4: Simplify right side
    3,131.85x = 6,024,757.45
  5. Step 5: Solve for x
    x = 6,024,757.45/3,131.85
  6. Step 6: Final answer
    x = 1,923.71

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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.