Home / 5,410.92-8,113.66-2,121.48

Finding the Fourth Proportional to 5,410.92, 8,113.66 and 2,121.48

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Solution

The fourth proportional to 5,410.92, 8,113.66 and 2,121.48 is: 3,181.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,410.92 : 8,113.66 = 2,121.48 : x
  2. Step 2: Convert to fraction form
    5,410.92/8,113.66 = 2,121.48/x
  3. Step 3: Cross multiply
    5,410.92x = 8,113.66 × 2,121.48
  4. Step 4: Simplify right side
    5,410.92x = 17,212,967.42
  5. Step 5: Solve for x
    x = 17,212,967.42/5,410.92
  6. Step 6: Final answer
    x = 3,181.15

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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.