Home / 3,718.81-5,131.92-2,040.28

Finding the Fourth Proportional to 3,718.81, 5,131.92 and 2,040.28

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Solution

The fourth proportional to 3,718.81, 5,131.92 and 2,040.28 is: 2,815.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.81 : 5,131.92 = 2,040.28 : x
  2. Step 2: Convert to fraction form
    3,718.81/5,131.92 = 2,040.28/x
  3. Step 3: Cross multiply
    3,718.81x = 5,131.92 × 2,040.28
  4. Step 4: Simplify right side
    3,718.81x = 10,470,553.74
  5. Step 5: Solve for x
    x = 10,470,553.74/3,718.81
  6. Step 6: Final answer
    x = 2,815.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.