Home / 3,905.17-5,856.24-1,405.68

Finding the Fourth Proportional to 3,905.17, 5,856.24 and 1,405.68

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Solution

The fourth proportional to 3,905.17, 5,856.24 and 1,405.68 is: 2,107.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,905.17 : 5,856.24 = 1,405.68 : x
  2. Step 2: Convert to fraction form
    3,905.17/5,856.24 = 1,405.68/x
  3. Step 3: Cross multiply
    3,905.17x = 5,856.24 × 1,405.68
  4. Step 4: Simplify right side
    3,905.17x = 8,231,994.17
  5. Step 5: Solve for x
    x = 8,231,994.17/3,905.17
  6. Step 6: Final answer
    x = 2,107.97

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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.