Home / 1,331.30-1,997.63-746.96

Finding the Fourth Proportional to 1,331.30, 1,997.63 and 746.96

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Solution

The fourth proportional to 1,331.30, 1,997.63 and 746.96 is: 1,120.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.30 : 1,997.63 = 746.96 : x
  2. Step 2: Convert to fraction form
    1,331.30/1,997.63 = 746.96/x
  3. Step 3: Cross multiply
    1,331.30x = 1,997.63 × 746.96
  4. Step 4: Simplify right side
    1,331.30x = 1,492,138.78
  5. Step 5: Solve for x
    x = 1,492,138.78/1,331.30
  6. Step 6: Final answer
    x = 1,120.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.