Home / 5,388.18-8,085.96-2,101.30

Finding the Fourth Proportional to 5,388.18, 8,085.96 and 2,101.30

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Solution

The fourth proportional to 5,388.18, 8,085.96 and 2,101.30 is: 3,153.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,388.18 : 8,085.96 = 2,101.30 : x
  2. Step 2: Convert to fraction form
    5,388.18/8,085.96 = 2,101.30/x
  3. Step 3: Cross multiply
    5,388.18x = 8,085.96 × 2,101.30
  4. Step 4: Simplify right side
    5,388.18x = 16,991,027.75
  5. Step 5: Solve for x
    x = 16,991,027.75/5,388.18
  6. Step 6: Final answer
    x = 3,153.39

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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.