Home / 2,217.15-3,310.50-1,955.09

Finding the Fourth Proportional to 2,217.15, 3,310.50 and 1,955.09

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Solution

The fourth proportional to 2,217.15, 3,310.50 and 1,955.09 is: 2,919.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.15 : 3,310.50 = 1,955.09 : x
  2. Step 2: Convert to fraction form
    2,217.15/3,310.50 = 1,955.09/x
  3. Step 3: Cross multiply
    2,217.15x = 3,310.50 × 1,955.09
  4. Step 4: Simplify right side
    2,217.15x = 6,472,305.94
  5. Step 5: Solve for x
    x = 6,472,305.94/2,217.15
  6. Step 6: Final answer
    x = 2,919.20

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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 (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.