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Finding the Fourth Proportional to 1,891.58, 2,837.81 and 1,860.19

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Solution

The fourth proportional to 1,891.58, 2,837.81 and 1,860.19 is: 2,790.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891.58 : 2,837.81 = 1,860.19 : x
  2. Step 2: Convert to fraction form
    1,891.58/2,837.81 = 1,860.19/x
  3. Step 3: Cross multiply
    1,891.58x = 2,837.81 × 1,860.19
  4. Step 4: Simplify right side
    1,891.58x = 5,278,863.34
  5. Step 5: Solve for x
    x = 5,278,863.34/1,891.58
  6. Step 6: Final answer
    x = 2,790.72

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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.