Home / 3,890.82-5,836.29-1,117.74

Finding the Fourth Proportional to 3,890.82, 5,836.29 and 1,117.74

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Solution

The fourth proportional to 3,890.82, 5,836.29 and 1,117.74 is: 1,676.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.82 : 5,836.29 = 1,117.74 : x
  2. Step 2: Convert to fraction form
    3,890.82/5,836.29 = 1,117.74/x
  3. Step 3: Cross multiply
    3,890.82x = 5,836.29 × 1,117.74
  4. Step 4: Simplify right side
    3,890.82x = 6,523,454.78
  5. Step 5: Solve for x
    x = 6,523,454.78/3,890.82
  6. Step 6: Final answer
    x = 1,676.63

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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.