Home / 3,212.25-4,818.38-903.75

Finding the Fourth Proportional to 3,212.25, 4,818.38 and 903.75

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Solution

The fourth proportional to 3,212.25, 4,818.38 and 903.75 is: 1,355.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,212.25 : 4,818.38 = 903.75 : x
  2. Step 2: Convert to fraction form
    3,212.25/4,818.38 = 903.75/x
  3. Step 3: Cross multiply
    3,212.25x = 4,818.38 × 903.75
  4. Step 4: Simplify right side
    3,212.25x = 4,354,610.93
  5. Step 5: Solve for x
    x = 4,354,610.93/3,212.25
  6. Step 6: Final answer
    x = 1,355.63

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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.