Home / 7,480.56-11,221.26-3,778.45

Finding the Fourth Proportional to 7,480.56, 11,221.26 and 3,778.45

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Solution

The fourth proportional to 7,480.56, 11,221.26 and 3,778.45 is: 5,667.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,480.56 : 11,221.26 = 3,778.45 : x
  2. Step 2: Convert to fraction form
    7,480.56/11,221.26 = 3,778.45/x
  3. Step 3: Cross multiply
    7,480.56x = 11,221.26 × 3,778.45
  4. Step 4: Simplify right side
    7,480.56x = 42,398,969.85
  5. Step 5: Solve for x
    x = 42,398,969.85/7,480.56
  6. Step 6: Final answer
    x = 5,667.89

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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.