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Finding the Fourth Proportional to 3,904.30, 5,856.30 and 1,438.97

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Solution

The fourth proportional to 3,904.30, 5,856.30 and 1,438.97 is: 2,158.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,904.30 : 5,856.30 = 1,438.97 : x
  2. Step 2: Convert to fraction form
    3,904.30/5,856.30 = 1,438.97/x
  3. Step 3: Cross multiply
    3,904.30x = 5,856.30 × 1,438.97
  4. Step 4: Simplify right side
    3,904.30x = 8,427,010.73
  5. Step 5: Solve for x
    x = 8,427,010.73/3,904.30
  6. Step 6: Final answer
    x = 2,158.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.