Home / 3,906.08-5,392.90-3,485.71

Finding the Fourth Proportional to 3,906.08, 5,392.90 and 3,485.71

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Solution

The fourth proportional to 3,906.08, 5,392.90 and 3,485.71 is: 4,812.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,906.08 : 5,392.90 = 3,485.71 : x
  2. Step 2: Convert to fraction form
    3,906.08/5,392.90 = 3,485.71/x
  3. Step 3: Cross multiply
    3,906.08x = 5,392.90 × 3,485.71
  4. Step 4: Simplify right side
    3,906.08x = 18,798,066.22
  5. Step 5: Solve for x
    x = 18,798,066.22/3,906.08
  6. Step 6: Final answer
    x = 4,812.52

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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.