Home / 2,785.68-4,179.72-1,054.80

Finding the Fourth Proportional to 2,785.68, 4,179.72 and 1,054.80

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Solution

The fourth proportional to 2,785.68, 4,179.72 and 1,054.80 is: 1,582.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785.68 : 4,179.72 = 1,054.80 : x
  2. Step 2: Convert to fraction form
    2,785.68/4,179.72 = 1,054.80/x
  3. Step 3: Cross multiply
    2,785.68x = 4,179.72 × 1,054.80
  4. Step 4: Simplify right side
    2,785.68x = 4,408,768.66
  5. Step 5: Solve for x
    x = 4,408,768.66/2,785.68
  6. Step 6: Final answer
    x = 1,582.65

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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.