Home / 3,187.42-4,775.04-2,489.69

Finding the Fourth Proportional to 3,187.42, 4,775.04 and 2,489.69

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Solution

The fourth proportional to 3,187.42, 4,775.04 and 2,489.69 is: 3,729.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.42 : 4,775.04 = 2,489.69 : x
  2. Step 2: Convert to fraction form
    3,187.42/4,775.04 = 2,489.69/x
  3. Step 3: Cross multiply
    3,187.42x = 4,775.04 × 2,489.69
  4. Step 4: Simplify right side
    3,187.42x = 11,888,369.34
  5. Step 5: Solve for x
    x = 11,888,369.34/3,187.42
  6. Step 6: Final answer
    x = 3,729.78

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1.5x scale

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.