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Finding the Fourth Proportional to 3,231.50, 4,847.80 and 1,383.50

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Solution

The fourth proportional to 3,231.50, 4,847.80 and 1,383.50 is: 2,075.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,231.50 : 4,847.80 = 1,383.50 : x
  2. Step 2: Convert to fraction form
    3,231.50/4,847.80 = 1,383.50/x
  3. Step 3: Cross multiply
    3,231.50x = 4,847.80 × 1,383.50
  4. Step 4: Simplify right side
    3,231.50x = 6,706,931.30
  5. Step 5: Solve for x
    x = 6,706,931.30/3,231.50
  6. Step 6: Final answer
    x = 2,075.49

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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.