Home / 5,186.45-7,157.16-2,828.61

Finding the Fourth Proportional to 5,186.45, 7,157.16 and 2,828.61

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Solution

The fourth proportional to 5,186.45, 7,157.16 and 2,828.61 is: 3,903.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.45 : 7,157.16 = 2,828.61 : x
  2. Step 2: Convert to fraction form
    5,186.45/7,157.16 = 2,828.61/x
  3. Step 3: Cross multiply
    5,186.45x = 7,157.16 × 2,828.61
  4. Step 4: Simplify right side
    5,186.45x = 20,244,814.35
  5. Step 5: Solve for x
    x = 20,244,814.35/5,186.45
  6. Step 6: Final answer
    x = 3,903.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.