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Finding the Fourth Proportional to 6,336.88, 8,746.80 and 3,979

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Solution

The fourth proportional to 6,336.88, 8,746.80 and 3,979 is: 5,492.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,336.88 : 8,746.80 = 3,979 : x
  2. Step 2: Convert to fraction form
    6,336.88/8,746.80 = 3,979/x
  3. Step 3: Cross multiply
    6,336.88x = 8,746.80 × 3,979
  4. Step 4: Simplify right side
    6,336.88x = 34,803,517.20
  5. Step 5: Solve for x
    x = 34,803,517.20/6,336.88
  6. Step 6: Final answer
    x = 5,492.22

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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.