Home / 2,101.19-3,151.78-1,005.29

Finding the Fourth Proportional to 2,101.19, 3,151.78 and 1,005.29

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Solution

The fourth proportional to 2,101.19, 3,151.78 and 1,005.29 is: 1,507.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,101.19 : 3,151.78 = 1,005.29 : x
  2. Step 2: Convert to fraction form
    2,101.19/3,151.78 = 1,005.29/x
  3. Step 3: Cross multiply
    2,101.19x = 3,151.78 × 1,005.29
  4. Step 4: Simplify right side
    2,101.19x = 3,168,452.92
  5. Step 5: Solve for x
    x = 3,168,452.92/2,101.19
  6. Step 6: Final answer
    x = 1,507.93

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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.