Home / 8,143.73-11,236.89-4,787.21

Finding the Fourth Proportional to 8,143.73, 11,236.89 and 4,787.21

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Solution

The fourth proportional to 8,143.73, 11,236.89 and 4,787.21 is: 6,605.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,143.73 : 11,236.89 = 4,787.21 : x
  2. Step 2: Convert to fraction form
    8,143.73/11,236.89 = 4,787.21/x
  3. Step 3: Cross multiply
    8,143.73x = 11,236.89 × 4,787.21
  4. Step 4: Simplify right side
    8,143.73x = 53,793,352.18
  5. Step 5: Solve for x
    x = 53,793,352.18/8,143.73
  6. Step 6: Final answer
    x = 6,605.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.