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Finding the Fourth Proportional to 6,339.94, 8,749.15 and 3,689.15

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Solution

The fourth proportional to 6,339.94, 8,749.15 and 3,689.15 is: 5,091.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,339.94 : 8,749.15 = 3,689.15 : x
  2. Step 2: Convert to fraction form
    6,339.94/8,749.15 = 3,689.15/x
  3. Step 3: Cross multiply
    6,339.94x = 8,749.15 × 3,689.15
  4. Step 4: Simplify right side
    6,339.94x = 32,276,873.75
  5. Step 5: Solve for x
    x = 32,276,873.75/6,339.94
  6. Step 6: Final answer
    x = 5,091.04

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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.