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Finding the Fourth Proportional to 3,143.81, 4,716.02 and 835.31

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Solution

The fourth proportional to 3,143.81, 4,716.02 and 835.31 is: 1,253.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,143.81 : 4,716.02 = 835.31 : x
  2. Step 2: Convert to fraction form
    3,143.81/4,716.02 = 835.31/x
  3. Step 3: Cross multiply
    3,143.81x = 4,716.02 × 835.31
  4. Step 4: Simplify right side
    3,143.81x = 3,939,352.54
  5. Step 5: Solve for x
    x = 3,939,352.54/3,143.81
  6. Step 6: Final answer
    x = 1,253.05

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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.