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Finding the Fourth Proportional to 8,685.82, 11,983.56 and 4,908.52

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Solution

The fourth proportional to 8,685.82, 11,983.56 and 4,908.52 is: 6,772.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.82 : 11,983.56 = 4,908.52 : x
  2. Step 2: Convert to fraction form
    8,685.82/11,983.56 = 4,908.52/x
  3. Step 3: Cross multiply
    8,685.82x = 11,983.56 × 4,908.52
  4. Step 4: Simplify right side
    8,685.82x = 58,821,543.93
  5. Step 5: Solve for x
    x = 58,821,543.93/8,685.82
  6. Step 6: Final answer
    x = 6,772.13

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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.