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Finding the Fourth Proportional to 6,339.64, 8,747.22 and 3,821.08

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Solution

The fourth proportional to 6,339.64, 8,747.22 and 3,821.08 is: 5,272.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,339.64 : 8,747.22 = 3,821.08 : x
  2. Step 2: Convert to fraction form
    6,339.64/8,747.22 = 3,821.08/x
  3. Step 3: Cross multiply
    6,339.64x = 8,747.22 × 3,821.08
  4. Step 4: Simplify right side
    6,339.64x = 33,423,827.40
  5. Step 5: Solve for x
    x = 33,423,827.40/6,339.64
  6. Step 6: Final answer
    x = 5,272.20

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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.