Home / 2,879.46-4,321.35-1,785.42

Finding the Fourth Proportional to 2,879.46, 4,321.35 and 1,785.42

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Solution

The fourth proportional to 2,879.46, 4,321.35 and 1,785.42 is: 2,679.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,879.46 : 4,321.35 = 1,785.42 : x
  2. Step 2: Convert to fraction form
    2,879.46/4,321.35 = 1,785.42/x
  3. Step 3: Cross multiply
    2,879.46x = 4,321.35 × 1,785.42
  4. Step 4: Simplify right side
    2,879.46x = 7,715,424.72
  5. Step 5: Solve for x
    x = 7,715,424.72/2,879.46
  6. Step 6: Final answer
    x = 2,679.47

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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.