Home / 2,220.72-3,064.44-1,336.92

Finding the Fourth Proportional to 2,220.72, 3,064.44 and 1,336.92

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Solution

The fourth proportional to 2,220.72, 3,064.44 and 1,336.92 is: 1,844.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.72 : 3,064.44 = 1,336.92 : x
  2. Step 2: Convert to fraction form
    2,220.72/3,064.44 = 1,336.92/x
  3. Step 3: Cross multiply
    2,220.72x = 3,064.44 × 1,336.92
  4. Step 4: Simplify right side
    2,220.72x = 4,096,911.12
  5. Step 5: Solve for x
    x = 4,096,911.12/2,220.72
  6. Step 6: Final answer
    x = 1,844.86

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Half scale
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Double scale
Find fourth proportional to 2,221.72, 3,065.82 and 1,337.92
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.