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Finding the Fourth Proportional to 2,699.43, 4,049.40 and 751.65

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Solution

The fourth proportional to 2,699.43, 4,049.40 and 751.65 is: 1,127.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,699.43 : 4,049.40 = 751.65 : x
  2. Step 2: Convert to fraction form
    2,699.43/4,049.40 = 751.65/x
  3. Step 3: Cross multiply
    2,699.43x = 4,049.40 × 751.65
  4. Step 4: Simplify right side
    2,699.43x = 3,043,731.51
  5. Step 5: Solve for x
    x = 3,043,731.51/2,699.43
  6. Step 6: Final answer
    x = 1,127.55

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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.