Home / 3,815.19-5,722.72-1,218.13

Finding the Fourth Proportional to 3,815.19, 5,722.72 and 1,218.13

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Solution

The fourth proportional to 3,815.19, 5,722.72 and 1,218.13 is: 1,827.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.19 : 5,722.72 = 1,218.13 : x
  2. Step 2: Convert to fraction form
    3,815.19/5,722.72 = 1,218.13/x
  3. Step 3: Cross multiply
    3,815.19x = 5,722.72 × 1,218.13
  4. Step 4: Simplify right side
    3,815.19x = 6,970,999.56
  5. Step 5: Solve for x
    x = 6,970,999.56/3,815.19
  6. Step 6: Final answer
    x = 1,827.17

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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.