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Finding the Fourth Proportional to 3,424.96, 5,133.24 and 1,865.80

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Solution

The fourth proportional to 3,424.96, 5,133.24 and 1,865.80 is: 2,796.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,424.96 : 5,133.24 = 1,865.80 : x
  2. Step 2: Convert to fraction form
    3,424.96/5,133.24 = 1,865.80/x
  3. Step 3: Cross multiply
    3,424.96x = 5,133.24 × 1,865.80
  4. Step 4: Simplify right side
    3,424.96x = 9,577,599.19
  5. Step 5: Solve for x
    x = 9,577,599.19/3,424.96
  6. Step 6: Final answer
    x = 2,796.41

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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.