Home / 1,486.30-2,230.26-938.74

Finding the Fourth Proportional to 1,486.30, 2,230.26 and 938.74

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Solution

The fourth proportional to 1,486.30, 2,230.26 and 938.74 is: 1,408.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,486.30 : 2,230.26 = 938.74 : x
  2. Step 2: Convert to fraction form
    1,486.30/2,230.26 = 938.74/x
  3. Step 3: Cross multiply
    1,486.30x = 2,230.26 × 938.74
  4. Step 4: Simplify right side
    1,486.30x = 2,093,634.27
  5. Step 5: Solve for x
    x = 2,093,634.27/1,486.30
  6. Step 6: Final answer
    x = 1,408.62

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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.