Home / 1,991.03-2,747.64-1,106.83

Finding the Fourth Proportional to 1,991.03, 2,747.64 and 1,106.83

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Solution

The fourth proportional to 1,991.03, 2,747.64 and 1,106.83 is: 1,527.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991.03 : 2,747.64 = 1,106.83 : x
  2. Step 2: Convert to fraction form
    1,991.03/2,747.64 = 1,106.83/x
  3. Step 3: Cross multiply
    1,991.03x = 2,747.64 × 1,106.83
  4. Step 4: Simplify right side
    1,991.03x = 3,041,170.38
  5. Step 5: Solve for x
    x = 3,041,170.38/1,991.03
  6. Step 6: Final answer
    x = 1,527.44

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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.