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Finding the Fourth Proportional to 8,765.89, 13,148.90 and 2,192.10

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Solution

The fourth proportional to 8,765.89, 13,148.90 and 2,192.10 is: 3,288.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,765.89 : 13,148.90 = 2,192.10 : x
  2. Step 2: Convert to fraction form
    8,765.89/13,148.90 = 2,192.10/x
  3. Step 3: Cross multiply
    8,765.89x = 13,148.90 × 2,192.10
  4. Step 4: Simplify right side
    8,765.89x = 28,823,651.64
  5. Step 5: Solve for x
    x = 28,823,651.64/8,765.89
  6. Step 6: Final answer
    x = 3,288.16

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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.