Home / 8,639.08-12,957.26-3,091.56

Finding the Fourth Proportional to 8,639.08, 12,957.26 and 3,091.56

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Solution

The fourth proportional to 8,639.08, 12,957.26 and 3,091.56 is: 4,636.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639.08 : 12,957.26 = 3,091.56 : x
  2. Step 2: Convert to fraction form
    8,639.08/12,957.26 = 3,091.56/x
  3. Step 3: Cross multiply
    8,639.08x = 12,957.26 × 3,091.56
  4. Step 4: Simplify right side
    8,639.08x = 40,058,146.73
  5. Step 5: Solve for x
    x = 40,058,146.73/8,639.08
  6. Step 6: Final answer
    x = 4,636.85

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1.5x scale

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.