Home / 7,128.43-9,836.84-3,941.54

Finding the Fourth Proportional to 7,128.43, 9,836.84 and 3,941.54

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Solution

The fourth proportional to 7,128.43, 9,836.84 and 3,941.54 is: 5,439.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.43 : 9,836.84 = 3,941.54 : x
  2. Step 2: Convert to fraction form
    7,128.43/9,836.84 = 3,941.54/x
  3. Step 3: Cross multiply
    7,128.43x = 9,836.84 × 3,941.54
  4. Step 4: Simplify right side
    7,128.43x = 38,772,310.61
  5. Step 5: Solve for x
    x = 38,772,310.61/7,128.43
  6. Step 6: Final answer
    x = 5,439.11

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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.