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Finding the Fourth Proportional to 1,803.26, 2,691.86 and 1,667.99

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Solution

The fourth proportional to 1,803.26, 2,691.86 and 1,667.99 is: 2,489.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,803.26 : 2,691.86 = 1,667.99 : x
  2. Step 2: Convert to fraction form
    1,803.26/2,691.86 = 1,667.99/x
  3. Step 3: Cross multiply
    1,803.26x = 2,691.86 × 1,667.99
  4. Step 4: Simplify right side
    1,803.26x = 4,489,998.64
  5. Step 5: Solve for x
    x = 4,489,998.64/1,803.26
  6. Step 6: Final answer
    x = 2,489.93

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.