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Finding the Fourth Proportional to 6,681.39, 9,214.19 and 5,736.86

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Solution

The fourth proportional to 6,681.39, 9,214.19 and 5,736.86 is: 7,911.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,681.39 : 9,214.19 = 5,736.86 : x
  2. Step 2: Convert to fraction form
    6,681.39/9,214.19 = 5,736.86/x
  3. Step 3: Cross multiply
    6,681.39x = 9,214.19 × 5,736.86
  4. Step 4: Simplify right side
    6,681.39x = 52,860,499.35
  5. Step 5: Solve for x
    x = 52,860,499.35/6,681.39
  6. Step 6: Final answer
    x = 7,911.61

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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.