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Finding the Fourth Proportional to 2,593.66, 3,890.44 and 645.88

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Solution

The fourth proportional to 2,593.66, 3,890.44 and 645.88 is: 968.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,593.66 : 3,890.44 = 645.88 : x
  2. Step 2: Convert to fraction form
    2,593.66/3,890.44 = 645.88/x
  3. Step 3: Cross multiply
    2,593.66x = 3,890.44 × 645.88
  4. Step 4: Simplify right side
    2,593.66x = 2,512,757.39
  5. Step 5: Solve for x
    x = 2,512,757.39/2,593.66
  6. Step 6: Final answer
    x = 968.81

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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.