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Finding the Fourth Proportional to 8,063.88, 11,129.36 and 4,921.89

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Solution

The fourth proportional to 8,063.88, 11,129.36 and 4,921.89 is: 6,792.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,063.88 : 11,129.36 = 4,921.89 : x
  2. Step 2: Convert to fraction form
    8,063.88/11,129.36 = 4,921.89/x
  3. Step 3: Cross multiply
    8,063.88x = 11,129.36 × 4,921.89
  4. Step 4: Simplify right side
    8,063.88x = 54,777,485.69
  5. Step 5: Solve for x
    x = 54,777,485.69/8,063.88
  6. Step 6: Final answer
    x = 6,792.94

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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.