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Finding the Fourth Proportional to 1,839.72, 2,759.90 and 607

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Solution

The fourth proportional to 1,839.72, 2,759.90 and 607 is: 910.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,839.72 : 2,759.90 = 607 : x
  2. Step 2: Convert to fraction form
    1,839.72/2,759.90 = 607/x
  3. Step 3: Cross multiply
    1,839.72x = 2,759.90 × 607
  4. Step 4: Simplify right side
    1,839.72x = 1,675,259.30
  5. Step 5: Solve for x
    x = 1,675,259.30/1,839.72
  6. Step 6: Final answer
    x = 910.61

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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.