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Finding the Fourth Proportional to 8,168, 11,278.19 and 6,276.60

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Solution

The fourth proportional to 8,168, 11,278.19 and 6,276.60 is: 8,666.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,168 : 11,278.19 = 6,276.60 : x
  2. Step 2: Convert to fraction form
    8,168/11,278.19 = 6,276.60/x
  3. Step 3: Cross multiply
    8,168x = 11,278.19 × 6,276.60
  4. Step 4: Simplify right side
    8,168x = 70,788,687.35
  5. Step 5: Solve for x
    x = 70,788,687.35/8,168
  6. Step 6: Final answer
    x = 8,666.59

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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.