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Finding the Fourth Proportional to 8,990.65, 13,486.11 and 3,444.28

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Solution

The fourth proportional to 8,990.65, 13,486.11 and 3,444.28 is: 5,166.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,990.65 : 13,486.11 = 3,444.28 : x
  2. Step 2: Convert to fraction form
    8,990.65/13,486.11 = 3,444.28/x
  3. Step 3: Cross multiply
    8,990.65x = 13,486.11 × 3,444.28
  4. Step 4: Simplify right side
    8,990.65x = 46,449,938.95
  5. Step 5: Solve for x
    x = 46,449,938.95/8,990.65
  6. Step 6: Final answer
    x = 5,166.47

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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.