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Finding the Fourth Proportional to 3,535.84, 5,303.73 and 938.75

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Solution

The fourth proportional to 3,535.84, 5,303.73 and 938.75 is: 1,408.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,535.84 : 5,303.73 = 938.75 : x
  2. Step 2: Convert to fraction form
    3,535.84/5,303.73 = 938.75/x
  3. Step 3: Cross multiply
    3,535.84x = 5,303.73 × 938.75
  4. Step 4: Simplify right side
    3,535.84x = 4,978,876.54
  5. Step 5: Solve for x
    x = 4,978,876.54/3,535.84
  6. Step 6: Final answer
    x = 1,408.12

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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.