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Finding the Fourth Proportional to 8,127.90, 11,216.50 and 4,401.90

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Solution

The fourth proportional to 8,127.90, 11,216.50 and 4,401.90 is: 6,074.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,127.90 : 11,216.50 = 4,401.90 : x
  2. Step 2: Convert to fraction form
    8,127.90/11,216.50 = 4,401.90/x
  3. Step 3: Cross multiply
    8,127.90x = 11,216.50 × 4,401.90
  4. Step 4: Simplify right side
    8,127.90x = 49,373,911.35
  5. Step 5: Solve for x
    x = 49,373,911.35/8,127.90
  6. Step 6: Final answer
    x = 6,074.62

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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.