Home / 3,906.47-5,377.70-3,020.60

Finding the Fourth Proportional to 3,906.47, 5,377.70 and 3,020.60

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Solution

The fourth proportional to 3,906.47, 5,377.70 and 3,020.60 is: 4,158.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,906.47 : 5,377.70 = 3,020.60 : x
  2. Step 2: Convert to fraction form
    3,906.47/5,377.70 = 3,020.60/x
  3. Step 3: Cross multiply
    3,906.47x = 5,377.70 × 3,020.60
  4. Step 4: Simplify right side
    3,906.47x = 16,243,861.28
  5. Step 5: Solve for x
    x = 16,243,861.28/3,906.47
  6. Step 6: Final answer
    x = 4,158.20

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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.