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Finding the Fourth Proportional to 5,339.61, 7,993.64 and 3,943.68

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Solution

The fourth proportional to 5,339.61, 7,993.64 and 3,943.68 is: 5,903.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,339.61 : 7,993.64 = 3,943.68 : x
  2. Step 2: Convert to fraction form
    5,339.61/7,993.64 = 3,943.68/x
  3. Step 3: Cross multiply
    5,339.61x = 7,993.64 × 3,943.68
  4. Step 4: Simplify right side
    5,339.61x = 31,524,328.09
  5. Step 5: Solve for x
    x = 31,524,328.09/5,339.61
  6. Step 6: Final answer
    x = 5,903.86

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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.