Home / 5,410.30-8,115.42-2,121.07

Finding the Fourth Proportional to 5,410.30, 8,115.42 and 2,121.07

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Solution

The fourth proportional to 5,410.30, 8,115.42 and 2,121.07 is: 3,181.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,410.30 : 8,115.42 = 2,121.07 : x
  2. Step 2: Convert to fraction form
    5,410.30/8,115.42 = 2,121.07/x
  3. Step 3: Cross multiply
    5,410.30x = 8,115.42 × 2,121.07
  4. Step 4: Simplify right side
    5,410.30x = 17,213,373.90
  5. Step 5: Solve for x
    x = 17,213,373.90/5,410.30
  6. Step 6: Final answer
    x = 3,181.59

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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.