Home / 3,223.36-4,449.72-2,640.16

Finding the Fourth Proportional to 3,223.36, 4,449.72 and 2,640.16

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Solution

The fourth proportional to 3,223.36, 4,449.72 and 2,640.16 is: 3,644.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,223.36 : 4,449.72 = 2,640.16 : x
  2. Step 2: Convert to fraction form
    3,223.36/4,449.72 = 2,640.16/x
  3. Step 3: Cross multiply
    3,223.36x = 4,449.72 × 2,640.16
  4. Step 4: Simplify right side
    3,223.36x = 11,747,972.76
  5. Step 5: Solve for x
    x = 11,747,972.76/3,223.36
  6. Step 6: Final answer
    x = 3,644.64

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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.