Home / 3,945.81-5,440.37-3,197.01

Finding the Fourth Proportional to 3,945.81, 5,440.37 and 3,197.01

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Solution

The fourth proportional to 3,945.81, 5,440.37 and 3,197.01 is: 4,407.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.81 : 5,440.37 = 3,197.01 : x
  2. Step 2: Convert to fraction form
    3,945.81/5,440.37 = 3,197.01/x
  3. Step 3: Cross multiply
    3,945.81x = 5,440.37 × 3,197.01
  4. Step 4: Simplify right side
    3,945.81x = 17,392,898.08
  5. Step 5: Solve for x
    x = 17,392,898.08/3,945.81
  6. Step 6: Final answer
    x = 4,407.95

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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.