Home / 3,807.20-5,711.21-1,209.53

Finding the Fourth Proportional to 3,807.20, 5,711.21 and 1,209.53

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Solution

The fourth proportional to 3,807.20, 5,711.21 and 1,209.53 is: 1,814.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,807.20 : 5,711.21 = 1,209.53 : x
  2. Step 2: Convert to fraction form
    3,807.20/5,711.21 = 1,209.53/x
  3. Step 3: Cross multiply
    3,807.20x = 5,711.21 × 1,209.53
  4. Step 4: Simplify right side
    3,807.20x = 6,907,873.78
  5. Step 5: Solve for x
    x = 6,907,873.78/3,807.20
  6. Step 6: Final answer
    x = 1,814.42

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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.