Home / 7,186.90-10,792.65-3,906.40

Finding the Fourth Proportional to 7,186.90, 10,792.65 and 3,906.40

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Solution

The fourth proportional to 7,186.90, 10,792.65 and 3,906.40 is: 5,866.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,186.90 : 10,792.65 = 3,906.40 : x
  2. Step 2: Convert to fraction form
    7,186.90/10,792.65 = 3,906.40/x
  3. Step 3: Cross multiply
    7,186.90x = 10,792.65 × 3,906.40
  4. Step 4: Simplify right side
    7,186.90x = 42,160,407.96
  5. Step 5: Solve for x
    x = 42,160,407.96/7,186.90
  6. Step 6: Final answer
    x = 5,866.29

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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.