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Finding the Fourth Proportional to 2,387.24, 3,579.42 and 826.46

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Solution

The fourth proportional to 2,387.24, 3,579.42 and 826.46 is: 1,239.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,387.24 : 3,579.42 = 826.46 : x
  2. Step 2: Convert to fraction form
    2,387.24/3,579.42 = 826.46/x
  3. Step 3: Cross multiply
    2,387.24x = 3,579.42 × 826.46
  4. Step 4: Simplify right side
    2,387.24x = 2,958,247.45
  5. Step 5: Solve for x
    x = 2,958,247.45/2,387.24
  6. Step 6: Final answer
    x = 1,239.19

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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.