Home / 3,729.37-5,147.18-2,158.33

Finding the Fourth Proportional to 3,729.37, 5,147.18 and 2,158.33

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Solution

The fourth proportional to 3,729.37, 5,147.18 and 2,158.33 is: 2,978.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,729.37 : 5,147.18 = 2,158.33 : x
  2. Step 2: Convert to fraction form
    3,729.37/5,147.18 = 2,158.33/x
  3. Step 3: Cross multiply
    3,729.37x = 5,147.18 × 2,158.33
  4. Step 4: Simplify right side
    3,729.37x = 11,109,313.01
  5. Step 5: Solve for x
    x = 11,109,313.01/3,729.37
  6. Step 6: Final answer
    x = 2,978.87

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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.