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Finding the Fourth Proportional to 1,372.01, 1,893.70 and 841.26

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Solution

The fourth proportional to 1,372.01, 1,893.70 and 841.26 is: 1,161.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372.01 : 1,893.70 = 841.26 : x
  2. Step 2: Convert to fraction form
    1,372.01/1,893.70 = 841.26/x
  3. Step 3: Cross multiply
    1,372.01x = 1,893.70 × 841.26
  4. Step 4: Simplify right side
    1,372.01x = 1,593,091.27
  5. Step 5: Solve for x
    x = 1,593,091.27/1,372.01
  6. Step 6: Final answer
    x = 1,161.14

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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.