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Finding the Fourth Proportional to 3,362.24, 4,640.64 and 1,965.28

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Solution

The fourth proportional to 3,362.24, 4,640.64 and 1,965.28 is: 2,712.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,362.24 : 4,640.64 = 1,965.28 : x
  2. Step 2: Convert to fraction form
    3,362.24/4,640.64 = 1,965.28/x
  3. Step 3: Cross multiply
    3,362.24x = 4,640.64 × 1,965.28
  4. Step 4: Simplify right side
    3,362.24x = 9,120,156.98
  5. Step 5: Solve for x
    x = 9,120,156.98/3,362.24
  6. Step 6: Final answer
    x = 2,712.52

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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.