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Finding the Fourth Proportional to 5,408.68, 8,113.08 and 1,945.96

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Solution

The fourth proportional to 5,408.68, 8,113.08 and 1,945.96 is: 2,918.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,408.68 : 8,113.08 = 1,945.96 : x
  2. Step 2: Convert to fraction form
    5,408.68/8,113.08 = 1,945.96/x
  3. Step 3: Cross multiply
    5,408.68x = 8,113.08 × 1,945.96
  4. Step 4: Simplify right side
    5,408.68x = 15,787,729.16
  5. Step 5: Solve for x
    x = 15,787,729.16/5,408.68
  6. Step 6: Final answer
    x = 2,918.96

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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.