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Finding the Fourth Proportional to 2,686.35, 4,029.06 and 738.09

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Solution

The fourth proportional to 2,686.35, 4,029.06 and 738.09 is: 1,107.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.35 : 4,029.06 = 738.09 : x
  2. Step 2: Convert to fraction form
    2,686.35/4,029.06 = 738.09/x
  3. Step 3: Cross multiply
    2,686.35x = 4,029.06 × 738.09
  4. Step 4: Simplify right side
    2,686.35x = 2,973,808.90
  5. Step 5: Solve for x
    x = 2,973,808.90/2,686.35
  6. Step 6: Final answer
    x = 1,107.01

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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.