Home / 3,338.15-5,007.20-1,389.90

Finding the Fourth Proportional to 3,338.15, 5,007.20 and 1,389.90

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Solution

The fourth proportional to 3,338.15, 5,007.20 and 1,389.90 is: 2,084.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,338.15 : 5,007.20 = 1,389.90 : x
  2. Step 2: Convert to fraction form
    3,338.15/5,007.20 = 1,389.90/x
  3. Step 3: Cross multiply
    3,338.15x = 5,007.20 × 1,389.90
  4. Step 4: Simplify right side
    3,338.15x = 6,959,500.33
  5. Step 5: Solve for x
    x = 6,959,500.33/3,338.15
  6. Step 6: Final answer
    x = 2,084.84

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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.