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Finding the Fourth Proportional to 8,771.91, 13,159.91 and 5,999.89

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Solution

The fourth proportional to 8,771.91, 13,159.91 and 5,999.89 is: 9,001.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,771.91 : 13,159.91 = 5,999.89 : x
  2. Step 2: Convert to fraction form
    8,771.91/13,159.91 = 5,999.89/x
  3. Step 3: Cross multiply
    8,771.91x = 13,159.91 × 5,999.89
  4. Step 4: Simplify right side
    8,771.91x = 78,957,946.61
  5. Step 5: Solve for x
    x = 78,957,946.61/8,771.91
  6. Step 6: Final answer
    x = 9,001.23

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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.