Home / 3,930.95-5,425.45-2,438.53

Finding the Fourth Proportional to 3,930.95, 5,425.45 and 2,438.53

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Solution

The fourth proportional to 3,930.95, 5,425.45 and 2,438.53 is: 3,365.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.95 : 5,425.45 = 2,438.53 : x
  2. Step 2: Convert to fraction form
    3,930.95/5,425.45 = 2,438.53/x
  3. Step 3: Cross multiply
    3,930.95x = 5,425.45 × 2,438.53
  4. Step 4: Simplify right side
    3,930.95x = 13,230,102.93
  5. Step 5: Solve for x
    x = 13,230,102.93/3,930.95
  6. Step 6: Final answer
    x = 3,365.62

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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.