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Finding the Fourth Proportional to 8,684.84, 11,985.82 and 4,908.70

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Solution

The fourth proportional to 8,684.84, 11,985.82 and 4,908.70 is: 6,774.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,684.84 : 11,985.82 = 4,908.70 : x
  2. Step 2: Convert to fraction form
    8,684.84/11,985.82 = 4,908.70/x
  3. Step 3: Cross multiply
    8,684.84x = 11,985.82 × 4,908.70
  4. Step 4: Simplify right side
    8,684.84x = 58,834,794.63
  5. Step 5: Solve for x
    x = 58,834,794.63/8,684.84
  6. Step 6: Final answer
    x = 6,774.42

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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.