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Finding the Fourth Proportional to 8,998.90, 12,411.79 and 6,608.12

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Solution

The fourth proportional to 8,998.90, 12,411.79 and 6,608.12 is: 9,114.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,998.90 : 12,411.79 = 6,608.12 : x
  2. Step 2: Convert to fraction form
    8,998.90/12,411.79 = 6,608.12/x
  3. Step 3: Cross multiply
    8,998.90x = 12,411.79 × 6,608.12
  4. Step 4: Simplify right side
    8,998.90x = 82,018,597.73
  5. Step 5: Solve for x
    x = 82,018,597.73/8,998.90
  6. Step 6: Final answer
    x = 9,114.29

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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.