Home / 3,131.61-4,697.55-1,487.31

Finding the Fourth Proportional to 3,131.61, 4,697.55 and 1,487.31

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Solution

The fourth proportional to 3,131.61, 4,697.55 and 1,487.31 is: 2,231.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.61 : 4,697.55 = 1,487.31 : x
  2. Step 2: Convert to fraction form
    3,131.61/4,697.55 = 1,487.31/x
  3. Step 3: Cross multiply
    3,131.61x = 4,697.55 × 1,487.31
  4. Step 4: Simplify right side
    3,131.61x = 6,986,713.09
  5. Step 5: Solve for x
    x = 6,986,713.09/3,131.61
  6. Step 6: Final answer
    x = 2,231.03

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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.