Home / 8,128.40-11,212.99-4,768.97

Finding the Fourth Proportional to 8,128.40, 11,212.99 and 4,768.97

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Solution

The fourth proportional to 8,128.40, 11,212.99 and 4,768.97 is: 6,578.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.40 : 11,212.99 = 4,768.97 : x
  2. Step 2: Convert to fraction form
    8,128.40/11,212.99 = 4,768.97/x
  3. Step 3: Cross multiply
    8,128.40x = 11,212.99 × 4,768.97
  4. Step 4: Simplify right side
    8,128.40x = 53,474,344.93
  5. Step 5: Solve for x
    x = 53,474,344.93/8,128.40
  6. Step 6: Final answer
    x = 6,578.70

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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.