Home / 4,220.70-6,335.10-2,143.05

Finding the Fourth Proportional to 4,220.70, 6,335.10 and 2,143.05

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Solution

The fourth proportional to 4,220.70, 6,335.10 and 2,143.05 is: 3,216.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,220.70 : 6,335.10 = 2,143.05 : x
  2. Step 2: Convert to fraction form
    4,220.70/6,335.10 = 2,143.05/x
  3. Step 3: Cross multiply
    4,220.70x = 6,335.10 × 2,143.05
  4. Step 4: Simplify right side
    4,220.70x = 13,576,436.06
  5. Step 5: Solve for x
    x = 13,576,436.06/4,220.70
  6. Step 6: Final answer
    x = 3,216.63

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Half scale
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Double scale
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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.