Home / 5,213.78-7,201.41-4,220.18

Finding the Fourth Proportional to 5,213.78, 7,201.41 and 4,220.18

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Solution

The fourth proportional to 5,213.78, 7,201.41 and 4,220.18 is: 5,829.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,213.78 : 7,201.41 = 4,220.18 : x
  2. Step 2: Convert to fraction form
    5,213.78/7,201.41 = 4,220.18/x
  3. Step 3: Cross multiply
    5,213.78x = 7,201.41 × 4,220.18
  4. Step 4: Simplify right side
    5,213.78x = 30,391,246.45
  5. Step 5: Solve for x
    x = 30,391,246.45/5,213.78
  6. Step 6: Final answer
    x = 5,829.02

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Half 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.