Home / 7,161.20-9,883.56-4,178

Finding the Fourth Proportional to 7,161.20, 9,883.56 and 4,178

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Solution

The fourth proportional to 7,161.20, 9,883.56 and 4,178 is: 5,766.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,161.20 : 9,883.56 = 4,178 : x
  2. Step 2: Convert to fraction form
    7,161.20/9,883.56 = 4,178/x
  3. Step 3: Cross multiply
    7,161.20x = 9,883.56 × 4,178
  4. Step 4: Simplify right side
    7,161.20x = 41,293,513.68
  5. Step 5: Solve for x
    x = 41,293,513.68/7,161.20
  6. Step 6: Final answer
    x = 5,766.28

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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.