Home / 5,186.79-7,778.48-2,065.86

Finding the Fourth Proportional to 5,186.79, 7,778.48 and 2,065.86

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Solution

The fourth proportional to 5,186.79, 7,778.48 and 2,065.86 is: 3,098.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.79 : 7,778.48 = 2,065.86 : x
  2. Step 2: Convert to fraction form
    5,186.79/7,778.48 = 2,065.86/x
  3. Step 3: Cross multiply
    5,186.79x = 7,778.48 × 2,065.86
  4. Step 4: Simplify right side
    5,186.79x = 16,069,240.36
  5. Step 5: Solve for x
    x = 16,069,240.36/5,186.79
  6. Step 6: Final answer
    x = 3,098.11

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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.