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Finding the Fourth Proportional to 2,111.03, 3,166.55 and 551.03

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Solution

The fourth proportional to 2,111.03, 3,166.55 and 551.03 is: 826.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,111.03 : 3,166.55 = 551.03 : x
  2. Step 2: Convert to fraction form
    2,111.03/3,166.55 = 551.03/x
  3. Step 3: Cross multiply
    2,111.03x = 3,166.55 × 551.03
  4. Step 4: Simplify right side
    2,111.03x = 1,744,855.35
  5. Step 5: Solve for x
    x = 1,744,855.35/2,111.03
  6. Step 6: Final answer
    x = 826.54

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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.