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Finding the Fourth Proportional to 2,393.43, 3,589.75 and 661.65

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Solution

The fourth proportional to 2,393.43, 3,589.75 and 661.65 is: 992.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,393.43 : 3,589.75 = 661.65 : x
  2. Step 2: Convert to fraction form
    2,393.43/3,589.75 = 661.65/x
  3. Step 3: Cross multiply
    2,393.43x = 3,589.75 × 661.65
  4. Step 4: Simplify right side
    2,393.43x = 2,375,158.09
  5. Step 5: Solve for x
    x = 2,375,158.09/2,393.43
  6. Step 6: Final answer
    x = 992.37

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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.