Home / 5,115.60-7,665.84-3,385.44

Finding the Fourth Proportional to 5,115.60, 7,665.84 and 3,385.44

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Solution

The fourth proportional to 5,115.60, 7,665.84 and 3,385.44 is: 5,073.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.60 : 7,665.84 = 3,385.44 : x
  2. Step 2: Convert to fraction form
    5,115.60/7,665.84 = 3,385.44/x
  3. Step 3: Cross multiply
    5,115.60x = 7,665.84 × 3,385.44
  4. Step 4: Simplify right side
    5,115.60x = 25,952,241.37
  5. Step 5: Solve for x
    x = 25,952,241.37/5,115.60
  6. Step 6: Final answer
    x = 5,073.16

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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.