Home / 1,431.21-2,147.22-846.73

Finding the Fourth Proportional to 1,431.21, 2,147.22 and 846.73

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Solution

The fourth proportional to 1,431.21, 2,147.22 and 846.73 is: 1,270.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.21 : 2,147.22 = 846.73 : x
  2. Step 2: Convert to fraction form
    1,431.21/2,147.22 = 846.73/x
  3. Step 3: Cross multiply
    1,431.21x = 2,147.22 × 846.73
  4. Step 4: Simplify right side
    1,431.21x = 1,818,115.59
  5. Step 5: Solve for x
    x = 1,818,115.59/1,431.21
  6. Step 6: Final answer
    x = 1,270.33

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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.