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Finding the Fourth Proportional to 1,551.58, 2,141.17 and 843.42

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Solution

The fourth proportional to 1,551.58, 2,141.17 and 843.42 is: 1,163.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551.58 : 2,141.17 = 843.42 : x
  2. Step 2: Convert to fraction form
    1,551.58/2,141.17 = 843.42/x
  3. Step 3: Cross multiply
    1,551.58x = 2,141.17 × 843.42
  4. Step 4: Simplify right side
    1,551.58x = 1,805,901.38
  5. Step 5: Solve for x
    x = 1,805,901.38/1,551.58
  6. Step 6: Final answer
    x = 1,163.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.