Home / 2,930.58-4,395.87-1,391.22

Finding the Fourth Proportional to 2,930.58, 4,395.87 and 1,391.22

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Solution

The fourth proportional to 2,930.58, 4,395.87 and 1,391.22 is: 2,086.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,930.58 : 4,395.87 = 1,391.22 : x
  2. Step 2: Convert to fraction form
    2,930.58/4,395.87 = 1,391.22/x
  3. Step 3: Cross multiply
    2,930.58x = 4,395.87 × 1,391.22
  4. Step 4: Simplify right side
    2,930.58x = 6,115,622.26
  5. Step 5: Solve for x
    x = 6,115,622.26/2,930.58
  6. Step 6: Final answer
    x = 2,086.83

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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.