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Finding the Fourth Proportional to 8,757.72, 13,128.08 and 5,829.57

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Solution

The fourth proportional to 8,757.72, 13,128.08 and 5,829.57 is: 8,738.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.72 : 13,128.08 = 5,829.57 : x
  2. Step 2: Convert to fraction form
    8,757.72/13,128.08 = 5,829.57/x
  3. Step 3: Cross multiply
    8,757.72x = 13,128.08 × 5,829.57
  4. Step 4: Simplify right side
    8,757.72x = 76,531,032.18
  5. Step 5: Solve for x
    x = 76,531,032.18/8,757.72
  6. Step 6: Final answer
    x = 8,738.69

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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.