Home / 2,129.01-3,192.67-742.06

Finding the Fourth Proportional to 2,129.01, 3,192.67 and 742.06

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Solution

The fourth proportional to 2,129.01, 3,192.67 and 742.06 is: 1,112.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.01 : 3,192.67 = 742.06 : x
  2. Step 2: Convert to fraction form
    2,129.01/3,192.67 = 742.06/x
  3. Step 3: Cross multiply
    2,129.01x = 3,192.67 × 742.06
  4. Step 4: Simplify right side
    2,129.01x = 2,369,152.70
  5. Step 5: Solve for x
    x = 2,369,152.70/2,129.01
  6. Step 6: Final answer
    x = 1,112.80

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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.