Home / 7,431.43-11,143.91-2,811.19

Finding the Fourth Proportional to 7,431.43, 11,143.91 and 2,811.19

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Solution

The fourth proportional to 7,431.43, 11,143.91 and 2,811.19 is: 4,215.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,431.43 : 11,143.91 = 2,811.19 : x
  2. Step 2: Convert to fraction form
    7,431.43/11,143.91 = 2,811.19/x
  3. Step 3: Cross multiply
    7,431.43x = 11,143.91 × 2,811.19
  4. Step 4: Simplify right side
    7,431.43x = 31,327,648.35
  5. Step 5: Solve for x
    x = 31,327,648.35/7,431.43
  6. Step 6: Final answer
    x = 4,215.56

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1.5x scale

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.