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Finding the Fourth Proportional to 8,691.00, 11,993.51 and 4,914.91

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Solution

The fourth proportional to 8,691.00, 11,993.51 and 4,914.91 is: 6,782.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691.00 : 11,993.51 = 4,914.91 : x
  2. Step 2: Convert to fraction form
    8,691.00/11,993.51 = 4,914.91/x
  3. Step 3: Cross multiply
    8,691.00x = 11,993.51 × 4,914.91
  4. Step 4: Simplify right side
    8,691.00x = 58,946,937.69
  5. Step 5: Solve for x
    x = 58,946,937.69/8,691.00
  6. Step 6: Final answer
    x = 6,782.53

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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.