Home / 3,814.85-5,722.28-1,218.05

Finding the Fourth Proportional to 3,814.85, 5,722.28 and 1,218.05

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Solution

The fourth proportional to 3,814.85, 5,722.28 and 1,218.05 is: 1,827.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,814.85 : 5,722.28 = 1,218.05 : x
  2. Step 2: Convert to fraction form
    3,814.85/5,722.28 = 1,218.05/x
  3. Step 3: Cross multiply
    3,814.85x = 5,722.28 × 1,218.05
  4. Step 4: Simplify right side
    3,814.85x = 6,970,017.06
  5. Step 5: Solve for x
    x = 6,970,017.06/3,814.85
  6. Step 6: Final answer
    x = 1,827.08

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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.