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Finding the Fourth Proportional to 6,636.30, 9,171.27 and 5,307.90

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Solution

The fourth proportional to 6,636.30, 9,171.27 and 5,307.90 is: 7,335.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,636.30 : 9,171.27 = 5,307.90 : x
  2. Step 2: Convert to fraction form
    6,636.30/9,171.27 = 5,307.90/x
  3. Step 3: Cross multiply
    6,636.30x = 9,171.27 × 5,307.90
  4. Step 4: Simplify right side
    6,636.30x = 48,680,184.03
  5. Step 5: Solve for x
    x = 48,680,184.03/6,636.30
  6. Step 6: Final answer
    x = 7,335.44

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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.