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Finding the Fourth Proportional to 1,843.24, 2,764.86 and 689.26

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Solution

The fourth proportional to 1,843.24, 2,764.86 and 689.26 is: 1,033.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,843.24 : 2,764.86 = 689.26 : x
  2. Step 2: Convert to fraction form
    1,843.24/2,764.86 = 689.26/x
  3. Step 3: Cross multiply
    1,843.24x = 2,764.86 × 689.26
  4. Step 4: Simplify right side
    1,843.24x = 1,905,707.40
  5. Step 5: Solve for x
    x = 1,905,707.40/1,843.24
  6. Step 6: Final answer
    x = 1,033.89

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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.