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Finding the Fourth Proportional to 8,752.65, 13,120.67 and 3,490.90

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Solution

The fourth proportional to 8,752.65, 13,120.67 and 3,490.90 is: 5,233.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,752.65 : 13,120.67 = 3,490.90 : x
  2. Step 2: Convert to fraction form
    8,752.65/13,120.67 = 3,490.90/x
  3. Step 3: Cross multiply
    8,752.65x = 13,120.67 × 3,490.90
  4. Step 4: Simplify right side
    8,752.65x = 45,802,922.83
  5. Step 5: Solve for x
    x = 45,802,922.83/8,752.65
  6. Step 6: Final answer
    x = 5,233.03

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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.