Home / 3,145.70-4,336.34-1,964.72

Finding the Fourth Proportional to 3,145.70, 4,336.34 and 1,964.72

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Solution

The fourth proportional to 3,145.70, 4,336.34 and 1,964.72 is: 2,708.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.70 : 4,336.34 = 1,964.72 : x
  2. Step 2: Convert to fraction form
    3,145.70/4,336.34 = 1,964.72/x
  3. Step 3: Cross multiply
    3,145.70x = 4,336.34 × 1,964.72
  4. Step 4: Simplify right side
    3,145.70x = 8,519,693.92
  5. Step 5: Solve for x
    x = 8,519,693.92/3,145.70
  6. Step 6: Final answer
    x = 2,708.36

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1.5x scale

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.