Home / 3,212.19-4,818.28-903.69

Finding the Fourth Proportional to 3,212.19, 4,818.28 and 903.69

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Solution

The fourth proportional to 3,212.19, 4,818.28 and 903.69 is: 1,355.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,212.19 : 4,818.28 = 903.69 : x
  2. Step 2: Convert to fraction form
    3,212.19/4,818.28 = 903.69/x
  3. Step 3: Cross multiply
    3,212.19x = 4,818.28 × 903.69
  4. Step 4: Simplify right side
    3,212.19x = 4,354,231.45
  5. Step 5: Solve for x
    x = 4,354,231.45/3,212.19
  6. Step 6: Final answer
    x = 1,355.53

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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.