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Finding the Fourth Proportional to 11,351.25, 17,026.88 and 3,143.25

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Solution

The fourth proportional to 11,351.25, 17,026.88 and 3,143.25 is: 4,714.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,351.25 : 17,026.88 = 3,143.25 : x
  2. Step 2: Convert to fraction form
    11,351.25/17,026.88 = 3,143.25/x
  3. Step 3: Cross multiply
    11,351.25x = 17,026.88 × 3,143.25
  4. Step 4: Simplify right side
    11,351.25x = 53,519,724.84
  5. Step 5: Solve for x
    x = 53,519,724.84/11,351.25
  6. Step 6: Final answer
    x = 4,714.88

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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.