Home / 3,890.28-5,836.10-1,518.75

Finding the Fourth Proportional to 3,890.28, 5,836.10 and 1,518.75

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Solution

The fourth proportional to 3,890.28, 5,836.10 and 1,518.75 is: 2,278.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.28 : 5,836.10 = 1,518.75 : x
  2. Step 2: Convert to fraction form
    3,890.28/5,836.10 = 1,518.75/x
  3. Step 3: Cross multiply
    3,890.28x = 5,836.10 × 1,518.75
  4. Step 4: Simplify right side
    3,890.28x = 8,863,577.82
  5. Step 5: Solve for x
    x = 8,863,577.82/3,890.28
  6. Step 6: Final answer
    x = 2,278.39

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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.