Home / 2,139.48-3,211.11-1,044.81

Finding the Fourth Proportional to 2,139.48, 3,211.11 and 1,044.81

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Solution

The fourth proportional to 2,139.48, 3,211.11 and 1,044.81 is: 1,568.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,139.48 : 3,211.11 = 1,044.81 : x
  2. Step 2: Convert to fraction form
    2,139.48/3,211.11 = 1,044.81/x
  3. Step 3: Cross multiply
    2,139.48x = 3,211.11 × 1,044.81
  4. Step 4: Simplify right side
    2,139.48x = 3,354,999.84
  5. Step 5: Solve for x
    x = 3,354,999.84/2,139.48
  6. Step 6: Final answer
    x = 1,568.14

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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.