Home / 4,220.46-6,331.41-1,298.22

Finding the Fourth Proportional to 4,220.46, 6,331.41 and 1,298.22

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Solution

The fourth proportional to 4,220.46, 6,331.41 and 1,298.22 is: 1,947.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,220.46 : 6,331.41 = 1,298.22 : x
  2. Step 2: Convert to fraction form
    4,220.46/6,331.41 = 1,298.22/x
  3. Step 3: Cross multiply
    4,220.46x = 6,331.41 × 1,298.22
  4. Step 4: Simplify right side
    4,220.46x = 8,219,563.09
  5. Step 5: Solve for x
    x = 8,219,563.09/4,220.46
  6. Step 6: Final answer
    x = 1,947.55

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Half scale
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Double scale
Find fourth proportional to 4,221.46, 6,332.91 and 1,299.22
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.