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Finding the Fourth Proportional to 2,183.68, 3,275.52 and 644.32

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Solution

The fourth proportional to 2,183.68, 3,275.52 and 644.32 is: 966.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,183.68 : 3,275.52 = 644.32 : x
  2. Step 2: Convert to fraction form
    2,183.68/3,275.52 = 644.32/x
  3. Step 3: Cross multiply
    2,183.68x = 3,275.52 × 644.32
  4. Step 4: Simplify right side
    2,183.68x = 2,110,483.05
  5. Step 5: Solve for x
    x = 2,110,483.05/2,183.68
  6. Step 6: Final answer
    x = 966.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.