Home / 5,402.09-8,105.87-2,115.32

Finding the Fourth Proportional to 5,402.09, 8,105.87 and 2,115.32

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Solution

The fourth proportional to 5,402.09, 8,105.87 and 2,115.32 is: 3,174.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,402.09 : 8,105.87 = 2,115.32 : x
  2. Step 2: Convert to fraction form
    5,402.09/8,105.87 = 2,115.32/x
  3. Step 3: Cross multiply
    5,402.09x = 8,105.87 × 2,115.32
  4. Step 4: Simplify right side
    5,402.09x = 17,146,473.69
  5. Step 5: Solve for x
    x = 17,146,473.69/5,402.09
  6. Step 6: Final answer
    x = 3,174.04

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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.