Home / 3,211.92-4,431.96-1,814.40

Finding the Fourth Proportional to 3,211.92, 4,431.96 and 1,814.40

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Solution

The fourth proportional to 3,211.92, 4,431.96 and 1,814.40 is: 2,503.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.92 : 4,431.96 = 1,814.40 : x
  2. Step 2: Convert to fraction form
    3,211.92/4,431.96 = 1,814.40/x
  3. Step 3: Cross multiply
    3,211.92x = 4,431.96 × 1,814.40
  4. Step 4: Simplify right side
    3,211.92x = 8,041,348.22
  5. Step 5: Solve for x
    x = 8,041,348.22/3,211.92
  6. Step 6: Final answer
    x = 2,503.60

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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.