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Finding the Fourth Proportional to 8,626.67, 12,998.69 and 7,100.90

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Solution

The fourth proportional to 8,626.67, 12,998.69 and 7,100.90 is: 10,699.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,626.67 : 12,998.69 = 7,100.90 : x
  2. Step 2: Convert to fraction form
    8,626.67/12,998.69 = 7,100.90/x
  3. Step 3: Cross multiply
    8,626.67x = 12,998.69 × 7,100.90
  4. Step 4: Simplify right side
    8,626.67x = 92,302,397.82
  5. Step 5: Solve for x
    x = 92,302,397.82/8,626.67
  6. Step 6: Final answer
    x = 10,699.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.