Home / 8,431.52-12,639.54-3,236.36

Finding the Fourth Proportional to 8,431.52, 12,639.54 and 3,236.36

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Solution

The fourth proportional to 8,431.52, 12,639.54 and 3,236.36 is: 4,851.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.52 : 12,639.54 = 3,236.36 : x
  2. Step 2: Convert to fraction form
    8,431.52/12,639.54 = 3,236.36/x
  3. Step 3: Cross multiply
    8,431.52x = 12,639.54 × 3,236.36
  4. Step 4: Simplify right side
    8,431.52x = 40,906,101.67
  5. Step 5: Solve for x
    x = 40,906,101.67/8,431.52
  6. Step 6: Final answer
    x = 4,851.57

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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.