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Finding the Fourth Proportional to 3,903.43, 5,387.43 and 2,331.67

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Solution

The fourth proportional to 3,903.43, 5,387.43 and 2,331.67 is: 3,218.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,903.43 : 5,387.43 = 2,331.67 : x
  2. Step 2: Convert to fraction form
    3,903.43/5,387.43 = 2,331.67/x
  3. Step 3: Cross multiply
    3,903.43x = 5,387.43 × 2,331.67
  4. Step 4: Simplify right side
    3,903.43x = 12,561,708.91
  5. Step 5: Solve for x
    x = 12,561,708.91/3,903.43
  6. Step 6: Final answer
    x = 3,218.12

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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.