Home / 3,371.70-5,055.15-1,290.90

Finding the Fourth Proportional to 3,371.70, 5,055.15 and 1,290.90

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Solution

The fourth proportional to 3,371.70, 5,055.15 and 1,290.90 is: 1,935.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,371.70 : 5,055.15 = 1,290.90 : x
  2. Step 2: Convert to fraction form
    3,371.70/5,055.15 = 1,290.90/x
  3. Step 3: Cross multiply
    3,371.70x = 5,055.15 × 1,290.90
  4. Step 4: Simplify right side
    3,371.70x = 6,525,693.14
  5. Step 5: Solve for x
    x = 6,525,693.14/3,371.70
  6. Step 6: Final answer
    x = 1,935.43

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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.