Home / 3,330.83-4,990.78-1,138.37

Finding the Fourth Proportional to 3,330.83, 4,990.78 and 1,138.37

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Solution

The fourth proportional to 3,330.83, 4,990.78 and 1,138.37 is: 1,705.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,330.83 : 4,990.78 = 1,138.37 : x
  2. Step 2: Convert to fraction form
    3,330.83/4,990.78 = 1,138.37/x
  3. Step 3: Cross multiply
    3,330.83x = 4,990.78 × 1,138.37
  4. Step 4: Simplify right side
    3,330.83x = 5,681,330.70
  5. Step 5: Solve for x
    x = 5,681,330.70/3,330.83
  6. Step 6: Final answer
    x = 1,705.68

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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.