Home / 2,194.40-3,291.60-2,097.20

Finding the Fourth Proportional to 2,194.40, 3,291.60 and 2,097.20

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Solution

The fourth proportional to 2,194.40, 3,291.60 and 2,097.20 is: 3,145.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,194.40 : 3,291.60 = 2,097.20 : x
  2. Step 2: Convert to fraction form
    2,194.40/3,291.60 = 2,097.20/x
  3. Step 3: Cross multiply
    2,194.40x = 3,291.60 × 2,097.20
  4. Step 4: Simplify right side
    2,194.40x = 6,903,143.52
  5. Step 5: Solve for x
    x = 6,903,143.52/2,194.40
  6. Step 6: Final answer
    x = 3,145.80

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Half 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.