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Finding the Fourth Proportional to 5,243.43, 7,859.67 and 1,955.21

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Solution

The fourth proportional to 5,243.43, 7,859.67 and 1,955.21 is: 2,930.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,243.43 : 7,859.67 = 1,955.21 : x
  2. Step 2: Convert to fraction form
    5,243.43/7,859.67 = 1,955.21/x
  3. Step 3: Cross multiply
    5,243.43x = 7,859.67 × 1,955.21
  4. Step 4: Simplify right side
    5,243.43x = 15,367,258.75
  5. Step 5: Solve for x
    x = 15,367,258.75/5,243.43
  6. Step 6: Final answer
    x = 2,930.76

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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.