Home / 3,212.20-4,818.08-903.70

Finding the Fourth Proportional to 3,212.20, 4,818.08 and 903.70

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Solution

The fourth proportional to 3,212.20, 4,818.08 and 903.70 is: 1,355.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,212.20 : 4,818.08 = 903.70 : x
  2. Step 2: Convert to fraction form
    3,212.20/4,818.08 = 903.70/x
  3. Step 3: Cross multiply
    3,212.20x = 4,818.08 × 903.70
  4. Step 4: Simplify right side
    3,212.20x = 4,354,098.90
  5. Step 5: Solve for x
    x = 4,354,098.90/3,212.20
  6. Step 6: Final answer
    x = 1,355.49

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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.