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Finding the Fourth Proportional to 6,751.47, 10,128.30 and 2,855.91

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Solution

The fourth proportional to 6,751.47, 10,128.30 and 2,855.91 is: 4,284.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,751.47 : 10,128.30 = 2,855.91 : x
  2. Step 2: Convert to fraction form
    6,751.47/10,128.30 = 2,855.91/x
  3. Step 3: Cross multiply
    6,751.47x = 10,128.30 × 2,855.91
  4. Step 4: Simplify right side
    6,751.47x = 28,925,513.25
  5. Step 5: Solve for x
    x = 28,925,513.25/6,751.47
  6. Step 6: Final answer
    x = 4,284.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.