Home / 3,906.05-5,857.85-1,308.38

Finding the Fourth Proportional to 3,906.05, 5,857.85 and 1,308.38

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Solution

The fourth proportional to 3,906.05, 5,857.85 and 1,308.38 is: 1,962.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,906.05 : 5,857.85 = 1,308.38 : x
  2. Step 2: Convert to fraction form
    3,906.05/5,857.85 = 1,308.38/x
  3. Step 3: Cross multiply
    3,906.05x = 5,857.85 × 1,308.38
  4. Step 4: Simplify right side
    3,906.05x = 7,664,267.76
  5. Step 5: Solve for x
    x = 7,664,267.76/3,906.05
  6. Step 6: Final answer
    x = 1,962.16

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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.