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Finding the Fourth Proportional to 3,891.38, 5,837.93 and 1,117.83

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Solution

The fourth proportional to 3,891.38, 5,837.93 and 1,117.83 is: 1,676.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.38 : 5,837.93 = 1,117.83 : x
  2. Step 2: Convert to fraction form
    3,891.38/5,837.93 = 1,117.83/x
  3. Step 3: Cross multiply
    3,891.38x = 5,837.93 × 1,117.83
  4. Step 4: Simplify right side
    3,891.38x = 6,525,807.70
  5. Step 5: Solve for x
    x = 6,525,807.70/3,891.38
  6. Step 6: Final answer
    x = 1,676.99

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1.5x scale

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.