Home / 1,785.20-2,677.38-486.36

Finding the Fourth Proportional to 1,785.20, 2,677.38 and 486.36

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Solution

The fourth proportional to 1,785.20, 2,677.38 and 486.36 is: 729.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,785.20 : 2,677.38 = 486.36 : x
  2. Step 2: Convert to fraction form
    1,785.20/2,677.38 = 486.36/x
  3. Step 3: Cross multiply
    1,785.20x = 2,677.38 × 486.36
  4. Step 4: Simplify right side
    1,785.20x = 1,302,170.54
  5. Step 5: Solve for x
    x = 1,302,170.54/1,785.20
  6. Step 6: Final answer
    x = 729.43

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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.