Home / 2,101.23-3,151.11-620.06

Finding the Fourth Proportional to 2,101.23, 3,151.11 and 620.06

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Solution

The fourth proportional to 2,101.23, 3,151.11 and 620.06 is: 929.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,101.23 : 3,151.11 = 620.06 : x
  2. Step 2: Convert to fraction form
    2,101.23/3,151.11 = 620.06/x
  3. Step 3: Cross multiply
    2,101.23x = 3,151.11 × 620.06
  4. Step 4: Simplify right side
    2,101.23x = 1,953,873.33
  5. Step 5: Solve for x
    x = 1,953,873.33/2,101.23
  6. Step 6: Final answer
    x = 929.87

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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.