Home / 8,638.24-12,969.20-4,481.12

Finding the Fourth Proportional to 8,638.24, 12,969.20 and 4,481.12

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Solution

The fourth proportional to 8,638.24, 12,969.20 and 4,481.12 is: 6,727.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,638.24 : 12,969.20 = 4,481.12 : x
  2. Step 2: Convert to fraction form
    8,638.24/12,969.20 = 4,481.12/x
  3. Step 3: Cross multiply
    8,638.24x = 12,969.20 × 4,481.12
  4. Step 4: Simplify right side
    8,638.24x = 58,116,541.50
  5. Step 5: Solve for x
    x = 58,116,541.50/8,638.24
  6. Step 6: Final answer
    x = 6,727.82

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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.