Home / 5,217.43-7,826.42-1,321.87

Finding the Fourth Proportional to 5,217.43, 7,826.42 and 1,321.87

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Solution

The fourth proportional to 5,217.43, 7,826.42 and 1,321.87 is: 1,982.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,217.43 : 7,826.42 = 1,321.87 : x
  2. Step 2: Convert to fraction form
    5,217.43/7,826.42 = 1,321.87/x
  3. Step 3: Cross multiply
    5,217.43x = 7,826.42 × 1,321.87
  4. Step 4: Simplify right side
    5,217.43x = 10,345,509.81
  5. Step 5: Solve for x
    x = 10,345,509.81/5,217.43
  6. Step 6: Final answer
    x = 1,982.87

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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.