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Finding the Fourth Proportional to 8,857.62, 12,214.26 and 6,615.99

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Solution

The fourth proportional to 8,857.62, 12,214.26 and 6,615.99 is: 9,123.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,857.62 : 12,214.26 = 6,615.99 : x
  2. Step 2: Convert to fraction form
    8,857.62/12,214.26 = 6,615.99/x
  3. Step 3: Cross multiply
    8,857.62x = 12,214.26 × 6,615.99
  4. Step 4: Simplify right side
    8,857.62x = 80,809,422.02
  5. Step 5: Solve for x
    x = 80,809,422.02/8,857.62
  6. Step 6: Final answer
    x = 9,123.15

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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.