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Finding the Fourth Proportional to 8,334.80, 12,492.60 and 3,401.20

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Solution

The fourth proportional to 8,334.80, 12,492.60 and 3,401.20 is: 5,097.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,334.80 : 12,492.60 = 3,401.20 : x
  2. Step 2: Convert to fraction form
    8,334.80/12,492.60 = 3,401.20/x
  3. Step 3: Cross multiply
    8,334.80x = 12,492.60 × 3,401.20
  4. Step 4: Simplify right side
    8,334.80x = 42,489,831.12
  5. Step 5: Solve for x
    x = 42,489,831.12/8,334.80
  6. Step 6: Final answer
    x = 5,097.88

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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.