Home / 4,220.76-6,331.82-1,299.06

Finding the Fourth Proportional to 4,220.76, 6,331.82 and 1,299.06

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Solution

The fourth proportional to 4,220.76, 6,331.82 and 1,299.06 is: 1,948.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,220.76 : 6,331.82 = 1,299.06 : x
  2. Step 2: Convert to fraction form
    4,220.76/6,331.82 = 1,299.06/x
  3. Step 3: Cross multiply
    4,220.76x = 6,331.82 × 1,299.06
  4. Step 4: Simplify right side
    4,220.76x = 8,225,432.71
  5. Step 5: Solve for x
    x = 8,225,432.71/4,220.76
  6. Step 6: Final answer
    x = 1,948.80

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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.