Home / 1,991.76-2,748.92-1,195.14

Finding the Fourth Proportional to 1,991.76, 2,748.92 and 1,195.14

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Solution

The fourth proportional to 1,991.76, 2,748.92 and 1,195.14 is: 1,649.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991.76 : 2,748.92 = 1,195.14 : x
  2. Step 2: Convert to fraction form
    1,991.76/2,748.92 = 1,195.14/x
  3. Step 3: Cross multiply
    1,991.76x = 2,748.92 × 1,195.14
  4. Step 4: Simplify right side
    1,991.76x = 3,285,344.25
  5. Step 5: Solve for x
    x = 3,285,344.25/1,991.76
  6. Step 6: Final answer
    x = 1,649.47

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1.5x scale

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.