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Finding the Fourth Proportional to 8,564.32, 12,817.26 and 7,179.22

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Solution

The fourth proportional to 8,564.32, 12,817.26 and 7,179.22 is: 10,744.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,564.32 : 12,817.26 = 7,179.22 : x
  2. Step 2: Convert to fraction form
    8,564.32/12,817.26 = 7,179.22/x
  3. Step 3: Cross multiply
    8,564.32x = 12,817.26 × 7,179.22
  4. Step 4: Simplify right side
    8,564.32x = 92,017,929.34
  5. Step 5: Solve for x
    x = 92,017,929.34/8,564.32
  6. Step 6: Final answer
    x = 10,744.34

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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.