Home / 2,311.51-3,189.76-1,263.37

Finding the Fourth Proportional to 2,311.51, 3,189.76 and 1,263.37

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Solution

The fourth proportional to 2,311.51, 3,189.76 and 1,263.37 is: 1,743.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.51 : 3,189.76 = 1,263.37 : x
  2. Step 2: Convert to fraction form
    2,311.51/3,189.76 = 1,263.37/x
  3. Step 3: Cross multiply
    2,311.51x = 3,189.76 × 1,263.37
  4. Step 4: Simplify right side
    2,311.51x = 4,029,847.09
  5. Step 5: Solve for x
    x = 4,029,847.09/2,311.51
  6. Step 6: Final answer
    x = 1,743.38

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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.