Home / 2,126.98-3,190.47-667.36

Finding the Fourth Proportional to 2,126.98, 3,190.47 and 667.36

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Solution

The fourth proportional to 2,126.98, 3,190.47 and 667.36 is: 1,001.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.98 : 3,190.47 = 667.36 : x
  2. Step 2: Convert to fraction form
    2,126.98/3,190.47 = 667.36/x
  3. Step 3: Cross multiply
    2,126.98x = 3,190.47 × 667.36
  4. Step 4: Simplify right side
    2,126.98x = 2,129,192.06
  5. Step 5: Solve for x
    x = 2,129,192.06/2,126.98
  6. Step 6: Final answer
    x = 1,001.04

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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.