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Finding the Fourth Proportional to 8,769.60, 13,156.18 and 3,222.99

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Solution

The fourth proportional to 8,769.60, 13,156.18 and 3,222.99 is: 4,835.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,769.60 : 13,156.18 = 3,222.99 : x
  2. Step 2: Convert to fraction form
    8,769.60/13,156.18 = 3,222.99/x
  3. Step 3: Cross multiply
    8,769.60x = 13,156.18 × 3,222.99
  4. Step 4: Simplify right side
    8,769.60x = 42,402,228.52
  5. Step 5: Solve for x
    x = 42,402,228.52/8,769.60
  6. Step 6: Final answer
    x = 4,835.14

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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.