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Finding the Fourth Proportional to 5,868.55, 8,098.63 and 3,179.78

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Solution

The fourth proportional to 5,868.55, 8,098.63 and 3,179.78 is: 4,388.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,868.55 : 8,098.63 = 3,179.78 : x
  2. Step 2: Convert to fraction form
    5,868.55/8,098.63 = 3,179.78/x
  3. Step 3: Cross multiply
    5,868.55x = 8,098.63 × 3,179.78
  4. Step 4: Simplify right side
    5,868.55x = 25,751,848.61
  5. Step 5: Solve for x
    x = 25,751,848.61/5,868.55
  6. Step 6: Final answer
    x = 4,388.11

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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.