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Finding the Fourth Proportional to 2,183.91, 3,275.99 and 645.03

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Solution

The fourth proportional to 2,183.91, 3,275.99 and 645.03 is: 967.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,183.91 : 3,275.99 = 645.03 : x
  2. Step 2: Convert to fraction form
    2,183.91/3,275.99 = 645.03/x
  3. Step 3: Cross multiply
    2,183.91x = 3,275.99 × 645.03
  4. Step 4: Simplify right side
    2,183.91x = 2,113,108.60
  5. Step 5: Solve for x
    x = 2,113,108.60/2,183.91
  6. Step 6: Final answer
    x = 967.58

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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.