Home / 1,172.00-1,766.81-1,092.72

Finding the Fourth Proportional to 1,172.00, 1,766.81 and 1,092.72

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Solution

The fourth proportional to 1,172.00, 1,766.81 and 1,092.72 is: 1,647.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,172.00 : 1,766.81 = 1,092.72 : x
  2. Step 2: Convert to fraction form
    1,172.00/1,766.81 = 1,092.72/x
  3. Step 3: Cross multiply
    1,172.00x = 1,766.81 × 1,092.72
  4. Step 4: Simplify right side
    1,172.00x = 1,930,637.98
  5. Step 5: Solve for x
    x = 1,930,637.98/1,172.00
  6. Step 6: Final answer
    x = 1,647.30

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.