Home / 9,128.20-13,693.76-3,934.12

Finding the Fourth Proportional to 9,128.20, 13,693.76 and 3,934.12

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Solution

The fourth proportional to 9,128.20, 13,693.76 and 3,934.12 is: 5,901.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,128.20 : 13,693.76 = 3,934.12 : x
  2. Step 2: Convert to fraction form
    9,128.20/13,693.76 = 3,934.12/x
  3. Step 3: Cross multiply
    9,128.20x = 13,693.76 × 3,934.12
  4. Step 4: Simplify right side
    9,128.20x = 53,872,895.09
  5. Step 5: Solve for x
    x = 53,872,895.09/9,128.20
  6. Step 6: Final answer
    x = 5,901.81

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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.