Home / 5,410.80-8,115.12-2,124

Finding the Fourth Proportional to 5,410.80, 8,115.12 and 2,124

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Solution

The fourth proportional to 5,410.80, 8,115.12 and 2,124 is: 3,185.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,410.80 : 8,115.12 = 2,124 : x
  2. Step 2: Convert to fraction form
    5,410.80/8,115.12 = 2,124/x
  3. Step 3: Cross multiply
    5,410.80x = 8,115.12 × 2,124
  4. Step 4: Simplify right side
    5,410.80x = 17,236,514.88
  5. Step 5: Solve for x
    x = 17,236,514.88/5,410.80
  6. Step 6: Final answer
    x = 3,185.58

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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.