Home / 3,930.36-5,426.40-2,440.46

Finding the Fourth Proportional to 3,930.36, 5,426.40 and 2,440.46

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Solution

The fourth proportional to 3,930.36, 5,426.40 and 2,440.46 is: 3,369.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.36 : 5,426.40 = 2,440.46 : x
  2. Step 2: Convert to fraction form
    3,930.36/5,426.40 = 2,440.46/x
  3. Step 3: Cross multiply
    3,930.36x = 5,426.40 × 2,440.46
  4. Step 4: Simplify right side
    3,930.36x = 13,242,912.14
  5. Step 5: Solve for x
    x = 13,242,912.14/3,930.36
  6. Step 6: Final answer
    x = 3,369.39

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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.