Home / 3,930.05-5,422.12-2,437.43

Finding the Fourth Proportional to 3,930.05, 5,422.12 and 2,437.43

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Solution

The fourth proportional to 3,930.05, 5,422.12 and 2,437.43 is: 3,362.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.05 : 5,422.12 = 2,437.43 : x
  2. Step 2: Convert to fraction form
    3,930.05/5,422.12 = 2,437.43/x
  3. Step 3: Cross multiply
    3,930.05x = 5,422.12 × 2,437.43
  4. Step 4: Simplify right side
    3,930.05x = 13,216,037.95
  5. Step 5: Solve for x
    x = 13,216,037.95/3,930.05
  6. Step 6: Final answer
    x = 3,362.82

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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.