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Finding the Fourth Proportional to 3,890.36, 5,835.49 and 968.69

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Solution

The fourth proportional to 3,890.36, 5,835.49 and 968.69 is: 1,453.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.36 : 5,835.49 = 968.69 : x
  2. Step 2: Convert to fraction form
    3,890.36/5,835.49 = 968.69/x
  3. Step 3: Cross multiply
    3,890.36x = 5,835.49 × 968.69
  4. Step 4: Simplify right side
    3,890.36x = 5,652,780.81
  5. Step 5: Solve for x
    x = 5,652,780.81/3,890.36
  6. Step 6: Final answer
    x = 1,453.02

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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.