Home / 3,211.72-4,431.95-1,814.38

Finding the Fourth Proportional to 3,211.72, 4,431.95 and 1,814.38

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Solution

The fourth proportional to 3,211.72, 4,431.95 and 1,814.38 is: 2,503.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.72 : 4,431.95 = 1,814.38 : x
  2. Step 2: Convert to fraction form
    3,211.72/4,431.95 = 1,814.38/x
  3. Step 3: Cross multiply
    3,211.72x = 4,431.95 × 1,814.38
  4. Step 4: Simplify right side
    3,211.72x = 8,041,241.44
  5. Step 5: Solve for x
    x = 8,041,241.44/3,211.72
  6. Step 6: Final answer
    x = 2,503.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.