Home / 2,311.18-3,189.43-1,263.24

Finding the Fourth Proportional to 2,311.18, 3,189.43 and 1,263.24

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Solution

The fourth proportional to 2,311.18, 3,189.43 and 1,263.24 is: 1,743.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.18 : 3,189.43 = 1,263.24 : x
  2. Step 2: Convert to fraction form
    2,311.18/3,189.43 = 1,263.24/x
  3. Step 3: Cross multiply
    2,311.18x = 3,189.43 × 1,263.24
  4. Step 4: Simplify right side
    2,311.18x = 4,029,023.53
  5. Step 5: Solve for x
    x = 4,029,023.53/2,311.18
  6. Step 6: Final answer
    x = 1,743.28

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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.