Home / 2,279.46-3,145.66-1,284.64

Finding the Fourth Proportional to 2,279.46, 3,145.66 and 1,284.64

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Solution

The fourth proportional to 2,279.46, 3,145.66 and 1,284.64 is: 1,772.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.46 : 3,145.66 = 1,284.64 : x
  2. Step 2: Convert to fraction form
    2,279.46/3,145.66 = 1,284.64/x
  3. Step 3: Cross multiply
    2,279.46x = 3,145.66 × 1,284.64
  4. Step 4: Simplify right side
    2,279.46x = 4,041,040.66
  5. Step 5: Solve for x
    x = 4,041,040.66/2,279.46
  6. Step 6: Final answer
    x = 1,772.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.