Home / 5,186.16-7,781.38-3,806.52

Finding the Fourth Proportional to 5,186.16, 7,781.38 and 3,806.52

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Solution

The fourth proportional to 5,186.16, 7,781.38 and 3,806.52 is: 5,711.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.16 : 7,781.38 = 3,806.52 : x
  2. Step 2: Convert to fraction form
    5,186.16/7,781.38 = 3,806.52/x
  3. Step 3: Cross multiply
    5,186.16x = 7,781.38 × 3,806.52
  4. Step 4: Simplify right side
    5,186.16x = 29,619,978.60
  5. Step 5: Solve for x
    x = 29,619,978.60/5,186.16
  6. Step 6: Final answer
    x = 5,711.35

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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.