Home / 1,493.09-2,238.67-979.49

Finding the Fourth Proportional to 1,493.09, 2,238.67 and 979.49

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Solution

The fourth proportional to 1,493.09, 2,238.67 and 979.49 is: 1,468.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,493.09 : 2,238.67 = 979.49 : x
  2. Step 2: Convert to fraction form
    1,493.09/2,238.67 = 979.49/x
  3. Step 3: Cross multiply
    1,493.09x = 2,238.67 × 979.49
  4. Step 4: Simplify right side
    1,493.09x = 2,192,754.88
  5. Step 5: Solve for x
    x = 2,192,754.88/1,493.09
  6. Step 6: Final answer
    x = 1,468.60

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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.