Home / 3,145.64-4,719.62-1,296.91

Finding the Fourth Proportional to 3,145.64, 4,719.62 and 1,296.91

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Solution

The fourth proportional to 3,145.64, 4,719.62 and 1,296.91 is: 1,945.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.64 : 4,719.62 = 1,296.91 : x
  2. Step 2: Convert to fraction form
    3,145.64/4,719.62 = 1,296.91/x
  3. Step 3: Cross multiply
    3,145.64x = 4,719.62 × 1,296.91
  4. Step 4: Simplify right side
    3,145.64x = 6,120,924.22
  5. Step 5: Solve for x
    x = 6,120,924.22/3,145.64
  6. Step 6: Final answer
    x = 1,945.85

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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.