Home / 3,890.18-5,834.45-1,257.95

Finding the Fourth Proportional to 3,890.18, 5,834.45 and 1,257.95

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Solution

The fourth proportional to 3,890.18, 5,834.45 and 1,257.95 is: 1,886.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.18 : 5,834.45 = 1,257.95 : x
  2. Step 2: Convert to fraction form
    3,890.18/5,834.45 = 1,257.95/x
  3. Step 3: Cross multiply
    3,890.18x = 5,834.45 × 1,257.95
  4. Step 4: Simplify right side
    3,890.18x = 7,339,464.11
  5. Step 5: Solve for x
    x = 7,339,464.11/3,890.18
  6. Step 6: Final answer
    x = 1,886.66

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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.