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Finding the Fourth Proportional to 3,900.79, 5,847.71 and 1,435.03

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Solution

The fourth proportional to 3,900.79, 5,847.71 and 1,435.03 is: 2,151.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,900.79 : 5,847.71 = 1,435.03 : x
  2. Step 2: Convert to fraction form
    3,900.79/5,847.71 = 1,435.03/x
  3. Step 3: Cross multiply
    3,900.79x = 5,847.71 × 1,435.03
  4. Step 4: Simplify right side
    3,900.79x = 8,391,617.49
  5. Step 5: Solve for x
    x = 8,391,617.49/3,900.79
  6. Step 6: Final answer
    x = 2,151.26

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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.