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Finding the Fourth Proportional to 8,809.01, 12,160.31 and 6,166.79

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Solution

The fourth proportional to 8,809.01, 12,160.31 and 6,166.79 is: 8,512.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,809.01 : 12,160.31 = 6,166.79 : x
  2. Step 2: Convert to fraction form
    8,809.01/12,160.31 = 6,166.79/x
  3. Step 3: Cross multiply
    8,809.01x = 12,160.31 × 6,166.79
  4. Step 4: Simplify right side
    8,809.01x = 74,989,986.47
  5. Step 5: Solve for x
    x = 74,989,986.47/8,809.01
  6. Step 6: Final answer
    x = 8,512.88

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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.