Home / 3,945.56-5,442.08-2,685.84

Finding the Fourth Proportional to 3,945.56, 5,442.08 and 2,685.84

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Solution

The fourth proportional to 3,945.56, 5,442.08 and 2,685.84 is: 3,704.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.56 : 5,442.08 = 2,685.84 : x
  2. Step 2: Convert to fraction form
    3,945.56/5,442.08 = 2,685.84/x
  3. Step 3: Cross multiply
    3,945.56x = 5,442.08 × 2,685.84
  4. Step 4: Simplify right side
    3,945.56x = 14,616,556.15
  5. Step 5: Solve for x
    x = 14,616,556.15/3,945.56
  6. Step 6: Final answer
    x = 3,704.56

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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.