Home / 4,220.10-6,331.23-1,298.43

Finding the Fourth Proportional to 4,220.10, 6,331.23 and 1,298.43

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Solution

The fourth proportional to 4,220.10, 6,331.23 and 1,298.43 is: 1,947.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,220.10 : 6,331.23 = 1,298.43 : x
  2. Step 2: Convert to fraction form
    4,220.10/6,331.23 = 1,298.43/x
  3. Step 3: Cross multiply
    4,220.10x = 6,331.23 × 1,298.43
  4. Step 4: Simplify right side
    4,220.10x = 8,220,658.97
  5. Step 5: Solve for x
    x = 8,220,658.97/4,220.10
  6. Step 6: Final answer
    x = 1,947.98

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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.