Home / 3,815.89-5,724.04-1,218.63

Finding the Fourth Proportional to 3,815.89, 5,724.04 and 1,218.63

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Solution

The fourth proportional to 3,815.89, 5,724.04 and 1,218.63 is: 1,828.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.89 : 5,724.04 = 1,218.63 : x
  2. Step 2: Convert to fraction form
    3,815.89/5,724.04 = 1,218.63/x
  3. Step 3: Cross multiply
    3,815.89x = 5,724.04 × 1,218.63
  4. Step 4: Simplify right side
    3,815.89x = 6,975,486.87
  5. Step 5: Solve for x
    x = 6,975,486.87/3,815.89
  6. Step 6: Final answer
    x = 1,828.01

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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.