Home / 3,408.09-5,108.68-1,215.62

Finding the Fourth Proportional to 3,408.09, 5,108.68 and 1,215.62

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Solution

The fourth proportional to 3,408.09, 5,108.68 and 1,215.62 is: 1,822.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,408.09 : 5,108.68 = 1,215.62 : x
  2. Step 2: Convert to fraction form
    3,408.09/5,108.68 = 1,215.62/x
  3. Step 3: Cross multiply
    3,408.09x = 5,108.68 × 1,215.62
  4. Step 4: Simplify right side
    3,408.09x = 6,210,213.58
  5. Step 5: Solve for x
    x = 6,210,213.58/3,408.09
  6. Step 6: Final answer
    x = 1,822.20

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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.