Home / 3,212.24-4,433.30-1,815.28

Finding the Fourth Proportional to 3,212.24, 4,433.30 and 1,815.28

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Solution

The fourth proportional to 3,212.24, 4,433.30 and 1,815.28 is: 2,505.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,212.24 : 4,433.30 = 1,815.28 : x
  2. Step 2: Convert to fraction form
    3,212.24/4,433.30 = 1,815.28/x
  3. Step 3: Cross multiply
    3,212.24x = 4,433.30 × 1,815.28
  4. Step 4: Simplify right side
    3,212.24x = 8,047,680.82
  5. Step 5: Solve for x
    x = 8,047,680.82/3,212.24
  6. Step 6: Final answer
    x = 2,505.32

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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.