Home / 2,126.49-3,190.01-665.52

Finding the Fourth Proportional to 2,126.49, 3,190.01 and 665.52

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Solution

The fourth proportional to 2,126.49, 3,190.01 and 665.52 is: 998.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.49 : 3,190.01 = 665.52 : x
  2. Step 2: Convert to fraction form
    2,126.49/3,190.01 = 665.52/x
  3. Step 3: Cross multiply
    2,126.49x = 3,190.01 × 665.52
  4. Step 4: Simplify right side
    2,126.49x = 2,123,012.13
  5. Step 5: Solve for x
    x = 2,123,012.13/2,126.49
  6. Step 6: Final answer
    x = 998.36

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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.