Home / 3,408.59-5,105.40-2,816.89

Finding the Fourth Proportional to 3,408.59, 5,105.40 and 2,816.89

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Solution

The fourth proportional to 3,408.59, 5,105.40 and 2,816.89 is: 4,219.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,408.59 : 5,105.40 = 2,816.89 : x
  2. Step 2: Convert to fraction form
    3,408.59/5,105.40 = 2,816.89/x
  3. Step 3: Cross multiply
    3,408.59x = 5,105.40 × 2,816.89
  4. Step 4: Simplify right side
    3,408.59x = 14,381,326.88
  5. Step 5: Solve for x
    x = 14,381,326.88/3,408.59
  6. Step 6: Final answer
    x = 4,219.14

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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.