Home / 2,311.81-3,190.40-1,263.94

Finding the Fourth Proportional to 2,311.81, 3,190.40 and 1,263.94

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Solution

The fourth proportional to 2,311.81, 3,190.40 and 1,263.94 is: 1,744.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.81 : 3,190.40 = 1,263.94 : x
  2. Step 2: Convert to fraction form
    2,311.81/3,190.40 = 1,263.94/x
  3. Step 3: Cross multiply
    2,311.81x = 3,190.40 × 1,263.94
  4. Step 4: Simplify right side
    2,311.81x = 4,032,467.86
  5. Step 5: Solve for x
    x = 4,032,467.86/2,311.81
  6. Step 6: Final answer
    x = 1,744.29

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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.