Home / 1,891.50-2,610.30-1,194.12

Finding the Fourth Proportional to 1,891.50, 2,610.30 and 1,194.12

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Solution

The fourth proportional to 1,891.50, 2,610.30 and 1,194.12 is: 1,647.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891.50 : 2,610.30 = 1,194.12 : x
  2. Step 2: Convert to fraction form
    1,891.50/2,610.30 = 1,194.12/x
  3. Step 3: Cross multiply
    1,891.50x = 2,610.30 × 1,194.12
  4. Step 4: Simplify right side
    1,891.50x = 3,117,011.44
  5. Step 5: Solve for x
    x = 3,117,011.44/1,891.50
  6. Step 6: Final answer
    x = 1,647.90

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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.