Home / 2,311.66-3,190.10-1,263.72

Finding the Fourth Proportional to 2,311.66, 3,190.10 and 1,263.72

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Solution

The fourth proportional to 2,311.66, 3,190.10 and 1,263.72 is: 1,743.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.66 : 3,190.10 = 1,263.72 : x
  2. Step 2: Convert to fraction form
    2,311.66/3,190.10 = 1,263.72/x
  3. Step 3: Cross multiply
    2,311.66x = 3,190.10 × 1,263.72
  4. Step 4: Simplify right side
    2,311.66x = 4,031,393.17
  5. Step 5: Solve for x
    x = 4,031,393.17/2,311.66
  6. Step 6: Final answer
    x = 1,743.94

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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.