Home / 3,131.20-4,694.48-1,487.84

Finding the Fourth Proportional to 3,131.20, 4,694.48 and 1,487.84

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Solution

The fourth proportional to 3,131.20, 4,694.48 and 1,487.84 is: 2,230.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.20 : 4,694.48 = 1,487.84 : x
  2. Step 2: Convert to fraction form
    3,131.20/4,694.48 = 1,487.84/x
  3. Step 3: Cross multiply
    3,131.20x = 4,694.48 × 1,487.84
  4. Step 4: Simplify right side
    3,131.20x = 6,984,635.12
  5. Step 5: Solve for x
    x = 6,984,635.12/3,131.20
  6. Step 6: Final answer
    x = 2,230.66

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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.