Home / 5,238.24-7,859.68-2,120.48

Finding the Fourth Proportional to 5,238.24, 7,859.68 and 2,120.48

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Solution

The fourth proportional to 5,238.24, 7,859.68 and 2,120.48 is: 3,181.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,238.24 : 7,859.68 = 2,120.48 : x
  2. Step 2: Convert to fraction form
    5,238.24/7,859.68 = 2,120.48/x
  3. Step 3: Cross multiply
    5,238.24x = 7,859.68 × 2,120.48
  4. Step 4: Simplify right side
    5,238.24x = 16,666,291.05
  5. Step 5: Solve for x
    x = 16,666,291.05/5,238.24
  6. Step 6: Final answer
    x = 3,181.66

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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.