Home / 9,107.94-12,569.19-5,129.21

Finding the Fourth Proportional to 9,107.94, 12,569.19 and 5,129.21

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Solution

The fourth proportional to 9,107.94, 12,569.19 and 5,129.21 is: 7,078.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,107.94 : 12,569.19 = 5,129.21 : x
  2. Step 2: Convert to fraction form
    9,107.94/12,569.19 = 5,129.21/x
  3. Step 3: Cross multiply
    9,107.94x = 12,569.19 × 5,129.21
  4. Step 4: Simplify right side
    9,107.94x = 64,469,952.19
  5. Step 5: Solve for x
    x = 64,469,952.19/9,107.94
  6. Step 6: Final answer
    x = 7,078.43

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1.5x scale

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.