Home / 3,989.66-5,505.76-2,197.33

Finding the Fourth Proportional to 3,989.66, 5,505.76 and 2,197.33

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Solution

The fourth proportional to 3,989.66, 5,505.76 and 2,197.33 is: 3,032.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.66 : 5,505.76 = 2,197.33 : x
  2. Step 2: Convert to fraction form
    3,989.66/5,505.76 = 2,197.33/x
  3. Step 3: Cross multiply
    3,989.66x = 5,505.76 × 2,197.33
  4. Step 4: Simplify right side
    3,989.66x = 12,097,960.60
  5. Step 5: Solve for x
    x = 12,097,960.60/3,989.66
  6. Step 6: Final answer
    x = 3,032.33

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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.