Home / 1,991.08-2,746.20-1,204.12

Finding the Fourth Proportional to 1,991.08, 2,746.20 and 1,204.12

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Solution

The fourth proportional to 1,991.08, 2,746.20 and 1,204.12 is: 1,660.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991.08 : 2,746.20 = 1,204.12 : x
  2. Step 2: Convert to fraction form
    1,991.08/2,746.20 = 1,204.12/x
  3. Step 3: Cross multiply
    1,991.08x = 2,746.20 × 1,204.12
  4. Step 4: Simplify right side
    1,991.08x = 3,306,754.34
  5. Step 5: Solve for x
    x = 3,306,754.34/1,991.08
  6. Step 6: Final answer
    x = 1,660.78

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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.