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Finding the Fourth Proportional to 8,876.67, 13,299.21 and 7,911.29

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Solution

The fourth proportional to 8,876.67, 13,299.21 and 7,911.29 is: 11,852.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,876.67 : 13,299.21 = 7,911.29 : x
  2. Step 2: Convert to fraction form
    8,876.67/13,299.21 = 7,911.29/x
  3. Step 3: Cross multiply
    8,876.67x = 13,299.21 × 7,911.29
  4. Step 4: Simplify right side
    8,876.67x = 105,213,840.58
  5. Step 5: Solve for x
    x = 105,213,840.58/8,876.67
  6. Step 6: Final answer
    x = 11,852.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.