Home / 3,891.05-5,836.86-1,117.70

Finding the Fourth Proportional to 3,891.05, 5,836.86 and 1,117.70

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Solution

The fourth proportional to 3,891.05, 5,836.86 and 1,117.70 is: 1,676.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.05 : 5,836.86 = 1,117.70 : x
  2. Step 2: Convert to fraction form
    3,891.05/5,836.86 = 1,117.70/x
  3. Step 3: Cross multiply
    3,891.05x = 5,836.86 × 1,117.70
  4. Step 4: Simplify right side
    3,891.05x = 6,523,858.42
  5. Step 5: Solve for x
    x = 6,523,858.42/3,891.05
  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.