Home / 1,241.11-1,721.49-1,196.78

Finding the Fourth Proportional to 1,241.11, 1,721.49 and 1,196.78

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Solution

The fourth proportional to 1,241.11, 1,721.49 and 1,196.78 is: 1,660.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,241.11 : 1,721.49 = 1,196.78 : x
  2. Step 2: Convert to fraction form
    1,241.11/1,721.49 = 1,196.78/x
  3. Step 3: Cross multiply
    1,241.11x = 1,721.49 × 1,196.78
  4. Step 4: Simplify right side
    1,241.11x = 2,060,249.11
  5. Step 5: Solve for x
    x = 2,060,249.11/1,241.11
  6. Step 6: Final answer
    x = 1,660.01

Related Problems

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Half scale
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Double scale
Find fourth proportional to 1,242.11, 1,722.88 and 1,197.78
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.