Home / 9,144.33-12,620.20-5,165.70

Finding the Fourth Proportional to 9,144.33, 12,620.20 and 5,165.70

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Solution

The fourth proportional to 9,144.33, 12,620.20 and 5,165.70 is: 7,129.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,144.33 : 12,620.20 = 5,165.70 : x
  2. Step 2: Convert to fraction form
    9,144.33/12,620.20 = 5,165.70/x
  3. Step 3: Cross multiply
    9,144.33x = 12,620.20 × 5,165.70
  4. Step 4: Simplify right side
    9,144.33x = 65,192,078.21
  5. Step 5: Solve for x
    x = 65,192,078.21/9,144.33
  6. Step 6: Final answer
    x = 7,129.24

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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.