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Finding the Fourth Proportional to 6,179.68, 8,528 and 3,385.28

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Solution

The fourth proportional to 6,179.68, 8,528 and 3,385.28 is: 4,671.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,179.68 : 8,528 = 3,385.28 : x
  2. Step 2: Convert to fraction form
    6,179.68/8,528 = 3,385.28/x
  3. Step 3: Cross multiply
    6,179.68x = 8,528 × 3,385.28
  4. Step 4: Simplify right side
    6,179.68x = 28,869,667.84
  5. Step 5: Solve for x
    x = 28,869,667.84/6,179.68
  6. Step 6: Final answer
    x = 4,671.71

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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.