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Finding the Fourth Proportional to 3,201, 4,802.31 and 892.50

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Solution

The fourth proportional to 3,201, 4,802.31 and 892.50 is: 1,338.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,201 : 4,802.31 = 892.50 : x
  2. Step 2: Convert to fraction form
    3,201/4,802.31 = 892.50/x
  3. Step 3: Cross multiply
    3,201x = 4,802.31 × 892.50
  4. Step 4: Simplify right side
    3,201x = 4,286,061.68
  5. Step 5: Solve for x
    x = 4,286,061.68/3,201
  6. Step 6: Final answer
    x = 1,338.98

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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.