Home / 2,311.68-3,190.12-1,263.74

Finding the Fourth Proportional to 2,311.68, 3,190.12 and 1,263.74

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Solution

The fourth proportional to 2,311.68, 3,190.12 and 1,263.74 is: 1,743.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.68 : 3,190.12 = 1,263.74 : x
  2. Step 2: Convert to fraction form
    2,311.68/3,190.12 = 1,263.74/x
  3. Step 3: Cross multiply
    2,311.68x = 3,190.12 × 1,263.74
  4. Step 4: Simplify right side
    2,311.68x = 4,031,490.22
  5. Step 5: Solve for x
    x = 4,031,490.22/2,311.68
  6. Step 6: Final answer
    x = 1,743.97

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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.