Home / 6,422.76-8,861.40-3,770.28

Finding the Fourth Proportional to 6,422.76, 8,861.40 and 3,770.28

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Solution

The fourth proportional to 6,422.76, 8,861.40 and 3,770.28 is: 5,201.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,422.76 : 8,861.40 = 3,770.28 : x
  2. Step 2: Convert to fraction form
    6,422.76/8,861.40 = 3,770.28/x
  3. Step 3: Cross multiply
    6,422.76x = 8,861.40 × 3,770.28
  4. Step 4: Simplify right side
    6,422.76x = 33,409,959.19
  5. Step 5: Solve for x
    x = 33,409,959.19/6,422.76
  6. Step 6: Final answer
    x = 5,201.81

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.