Home / 3,211.43-4,814.52-1,431.18

Finding the Fourth Proportional to 3,211.43, 4,814.52 and 1,431.18

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Solution

The fourth proportional to 3,211.43, 4,814.52 and 1,431.18 is: 2,145.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.43 : 4,814.52 = 1,431.18 : x
  2. Step 2: Convert to fraction form
    3,211.43/4,814.52 = 1,431.18/x
  3. Step 3: Cross multiply
    3,211.43x = 4,814.52 × 1,431.18
  4. Step 4: Simplify right side
    3,211.43x = 6,890,456.77
  5. Step 5: Solve for x
    x = 6,890,456.77/3,211.43
  6. Step 6: Final answer
    x = 2,145.61

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1.5x scale

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.