Home / 3,211.72-4,431.54-1,814.20

Finding the Fourth Proportional to 3,211.72, 4,431.54 and 1,814.20

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Solution

The fourth proportional to 3,211.72, 4,431.54 and 1,814.20 is: 2,503.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.72 : 4,431.54 = 1,814.20 : x
  2. Step 2: Convert to fraction form
    3,211.72/4,431.54 = 1,814.20/x
  3. Step 3: Cross multiply
    3,211.72x = 4,431.54 × 1,814.20
  4. Step 4: Simplify right side
    3,211.72x = 8,039,695.59
  5. Step 5: Solve for x
    x = 8,039,695.59/3,211.72
  6. Step 6: Final answer
    x = 2,503.24

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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.