Home / 2,311.29-3,189.57-1,263.35

Finding the Fourth Proportional to 2,311.29, 3,189.57 and 1,263.35

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Solution

The fourth proportional to 2,311.29, 3,189.57 and 1,263.35 is: 1,743.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.29 : 3,189.57 = 1,263.35 : x
  2. Step 2: Convert to fraction form
    2,311.29/3,189.57 = 1,263.35/x
  3. Step 3: Cross multiply
    2,311.29x = 3,189.57 × 1,263.35
  4. Step 4: Simplify right side
    2,311.29x = 4,029,536.94
  5. Step 5: Solve for x
    x = 4,029,536.94/2,311.29
  6. Step 6: Final answer
    x = 1,743.42

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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.