Home / 2,131.60-3,197.40-2,091.10

Finding the Fourth Proportional to 2,131.60, 3,197.40 and 2,091.10

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Solution

The fourth proportional to 2,131.60, 3,197.40 and 2,091.10 is: 3,136.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131.60 : 3,197.40 = 2,091.10 : x
  2. Step 2: Convert to fraction form
    2,131.60/3,197.40 = 2,091.10/x
  3. Step 3: Cross multiply
    2,131.60x = 3,197.40 × 2,091.10
  4. Step 4: Simplify right side
    2,131.60x = 6,686,083.14
  5. Step 5: Solve for x
    x = 6,686,083.14/2,131.60
  6. Step 6: Final answer
    x = 3,136.65

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Half scale
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Double scale
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Similar ratio
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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.