Home / 1,891.11-2,612.41-1,515.50

Finding the Fourth Proportional to 1,891.11, 2,612.41 and 1,515.50

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Solution

The fourth proportional to 1,891.11, 2,612.41 and 1,515.50 is: 2,093.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891.11 : 2,612.41 = 1,515.50 : x
  2. Step 2: Convert to fraction form
    1,891.11/2,612.41 = 1,515.50/x
  3. Step 3: Cross multiply
    1,891.11x = 2,612.41 × 1,515.50
  4. Step 4: Simplify right side
    1,891.11x = 3,959,100.30
  5. Step 5: Solve for x
    x = 3,959,100.30/1,891.11
  6. Step 6: Final answer
    x = 2,093.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.