Home / 3,718.80-5,131.74-2,040.28

Finding the Fourth Proportional to 3,718.80, 5,131.74 and 2,040.28

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Solution

The fourth proportional to 3,718.80, 5,131.74 and 2,040.28 is: 2,815.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.80 : 5,131.74 = 2,040.28 : x
  2. Step 2: Convert to fraction form
    3,718.80/5,131.74 = 2,040.28/x
  3. Step 3: Cross multiply
    3,718.80x = 5,131.74 × 2,040.28
  4. Step 4: Simplify right side
    3,718.80x = 10,470,186.49
  5. Step 5: Solve for x
    x = 10,470,186.49/3,718.80
  6. Step 6: Final answer
    x = 2,815.47

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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.