Home / 2,137.76-3,206.66-905.01

Finding the Fourth Proportional to 2,137.76, 3,206.66 and 905.01

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Solution

The fourth proportional to 2,137.76, 3,206.66 and 905.01 is: 1,357.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,137.76 : 3,206.66 = 905.01 : x
  2. Step 2: Convert to fraction form
    2,137.76/3,206.66 = 905.01/x
  3. Step 3: Cross multiply
    2,137.76x = 3,206.66 × 905.01
  4. Step 4: Simplify right side
    2,137.76x = 2,902,059.37
  5. Step 5: Solve for x
    x = 2,902,059.37/2,137.76
  6. Step 6: Final answer
    x = 1,357.52

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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.