Home / 3,612.26-5,418.38-1,271.72

Finding the Fourth Proportional to 3,612.26, 5,418.38 and 1,271.72

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Solution

The fourth proportional to 3,612.26, 5,418.38 and 1,271.72 is: 1,907.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.26 : 5,418.38 = 1,271.72 : x
  2. Step 2: Convert to fraction form
    3,612.26/5,418.38 = 1,271.72/x
  3. Step 3: Cross multiply
    3,612.26x = 5,418.38 × 1,271.72
  4. Step 4: Simplify right side
    3,612.26x = 6,890,628.76
  5. Step 5: Solve for x
    x = 6,890,628.76/3,612.26
  6. Step 6: Final answer
    x = 1,907.57

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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.