Home / 1,196.20-1,794.30-1,109.80

Finding the Fourth Proportional to 1,196.20, 1,794.30 and 1,109.80

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Solution

The fourth proportional to 1,196.20, 1,794.30 and 1,109.80 is: 1,664.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,196.20 : 1,794.30 = 1,109.80 : x
  2. Step 2: Convert to fraction form
    1,196.20/1,794.30 = 1,109.80/x
  3. Step 3: Cross multiply
    1,196.20x = 1,794.30 × 1,109.80
  4. Step 4: Simplify right side
    1,196.20x = 1,991,314.14
  5. Step 5: Solve for x
    x = 1,991,314.14/1,196.20
  6. Step 6: Final answer
    x = 1,664.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.