Home / 3,211.56-4,431.84-1,814.28

Finding the Fourth Proportional to 3,211.56, 4,431.84 and 1,814.28

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Solution

The fourth proportional to 3,211.56, 4,431.84 and 1,814.28 is: 2,503.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.56 : 4,431.84 = 1,814.28 : x
  2. Step 2: Convert to fraction form
    3,211.56/4,431.84 = 1,814.28/x
  3. Step 3: Cross multiply
    3,211.56x = 4,431.84 × 1,814.28
  4. Step 4: Simplify right side
    3,211.56x = 8,040,598.68
  5. Step 5: Solve for x
    x = 8,040,598.68/3,211.56
  6. Step 6: Final answer
    x = 2,503.64

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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.