Home / 3,212.56-4,433.22-1,815.28

Finding the Fourth Proportional to 3,212.56, 4,433.22 and 1,815.28

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Solution

The fourth proportional to 3,212.56, 4,433.22 and 1,815.28 is: 2,505.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,212.56 : 4,433.22 = 1,815.28 : x
  2. Step 2: Convert to fraction form
    3,212.56/4,433.22 = 1,815.28/x
  3. Step 3: Cross multiply
    3,212.56x = 4,433.22 × 1,815.28
  4. Step 4: Simplify right side
    3,212.56x = 8,047,535.60
  5. Step 5: Solve for x
    x = 8,047,535.60/3,212.56
  6. Step 6: Final answer
    x = 2,505.02

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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.