Home / 3,904.20-5,856.30-2,815.47

Finding the Fourth Proportional to 3,904.20, 5,856.30 and 2,815.47

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Solution

The fourth proportional to 3,904.20, 5,856.30 and 2,815.47 is: 4,223.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,904.20 : 5,856.30 = 2,815.47 : x
  2. Step 2: Convert to fraction form
    3,904.20/5,856.30 = 2,815.47/x
  3. Step 3: Cross multiply
    3,904.20x = 5,856.30 × 2,815.47
  4. Step 4: Simplify right side
    3,904.20x = 16,488,236.96
  5. Step 5: Solve for x
    x = 16,488,236.96/3,904.20
  6. Step 6: Final answer
    x = 4,223.21

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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.