Home / 3,815.69-5,723.64-1,218.63

Finding the Fourth Proportional to 3,815.69, 5,723.64 and 1,218.63

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Solution

The fourth proportional to 3,815.69, 5,723.64 and 1,218.63 is: 1,827.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.69 : 5,723.64 = 1,218.63 : x
  2. Step 2: Convert to fraction form
    3,815.69/5,723.64 = 1,218.63/x
  3. Step 3: Cross multiply
    3,815.69x = 5,723.64 × 1,218.63
  4. Step 4: Simplify right side
    3,815.69x = 6,974,970.80
  5. Step 5: Solve for x
    x = 6,974,970.80/3,815.69
  6. Step 6: Final answer
    x = 1,827.97

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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.