Home / 9,217.62-12,721.38-5,129.84

Finding the Fourth Proportional to 9,217.62, 12,721.38 and 5,129.84

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Solution

The fourth proportional to 9,217.62, 12,721.38 and 5,129.84 is: 7,079.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,217.62 : 12,721.38 = 5,129.84 : x
  2. Step 2: Convert to fraction form
    9,217.62/12,721.38 = 5,129.84/x
  3. Step 3: Cross multiply
    9,217.62x = 12,721.38 × 5,129.84
  4. Step 4: Simplify right side
    9,217.62x = 65,258,580.37
  5. Step 5: Solve for x
    x = 65,258,580.37/9,217.62
  6. Step 6: Final answer
    x = 7,079.76

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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.