Home / 3,816.12-5,723.76-1,218.72

Finding the Fourth Proportional to 3,816.12, 5,723.76 and 1,218.72

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Solution

The fourth proportional to 3,816.12, 5,723.76 and 1,218.72 is: 1,827.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,816.12 : 5,723.76 = 1,218.72 : x
  2. Step 2: Convert to fraction form
    3,816.12/5,723.76 = 1,218.72/x
  3. Step 3: Cross multiply
    3,816.12x = 5,723.76 × 1,218.72
  4. Step 4: Simplify right side
    3,816.12x = 6,975,660.79
  5. Step 5: Solve for x
    x = 6,975,660.79/3,816.12
  6. Step 6: Final answer
    x = 1,827.95

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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.