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Finding the Fourth Proportional to 8,634.99, 12,949.77 and 5,728.71

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Solution

The fourth proportional to 8,634.99, 12,949.77 and 5,728.71 is: 8,591.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,634.99 : 12,949.77 = 5,728.71 : x
  2. Step 2: Convert to fraction form
    8,634.99/12,949.77 = 5,728.71/x
  3. Step 3: Cross multiply
    8,634.99x = 12,949.77 × 5,728.71
  4. Step 4: Simplify right side
    8,634.99x = 74,185,476.90
  5. Step 5: Solve for x
    x = 74,185,476.90/8,634.99
  6. Step 6: Final answer
    x = 8,591.26

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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.