Home / 8,128.68-11,217.51-4,591.91

Finding the Fourth Proportional to 8,128.68, 11,217.51 and 4,591.91

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Solution

The fourth proportional to 8,128.68, 11,217.51 and 4,591.91 is: 6,336.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.68 : 11,217.51 = 4,591.91 : x
  2. Step 2: Convert to fraction form
    8,128.68/11,217.51 = 4,591.91/x
  3. Step 3: Cross multiply
    8,128.68x = 11,217.51 × 4,591.91
  4. Step 4: Simplify right side
    8,128.68x = 51,509,740.26
  5. Step 5: Solve for x
    x = 51,509,740.26/8,128.68
  6. Step 6: Final answer
    x = 6,336.79

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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.