Home / 3,580.18-5,370.19-1,387.64

Finding the Fourth Proportional to 3,580.18, 5,370.19 and 1,387.64

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Solution

The fourth proportional to 3,580.18, 5,370.19 and 1,387.64 is: 2,081.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,580.18 : 5,370.19 = 1,387.64 : x
  2. Step 2: Convert to fraction form
    3,580.18/5,370.19 = 1,387.64/x
  3. Step 3: Cross multiply
    3,580.18x = 5,370.19 × 1,387.64
  4. Step 4: Simplify right side
    3,580.18x = 7,451,890.45
  5. Step 5: Solve for x
    x = 7,451,890.45/3,580.18
  6. Step 6: Final answer
    x = 2,081.43

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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.