Home / 4,220.92-6,331.46-1,299.22

Finding the Fourth Proportional to 4,220.92, 6,331.46 and 1,299.22

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Solution

The fourth proportional to 4,220.92, 6,331.46 and 1,299.22 is: 1,948.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,220.92 : 6,331.46 = 1,299.22 : x
  2. Step 2: Convert to fraction form
    4,220.92/6,331.46 = 1,299.22/x
  3. Step 3: Cross multiply
    4,220.92x = 6,331.46 × 1,299.22
  4. Step 4: Simplify right side
    4,220.92x = 8,225,976.40
  5. Step 5: Solve for x
    x = 8,225,976.40/4,220.92
  6. Step 6: Final answer
    x = 1,948.86

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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.