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Finding the Fourth Proportional to 7,892.60, 11,839.42 and 2,627.40

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Solution

The fourth proportional to 7,892.60, 11,839.42 and 2,627.40 is: 3,941.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,892.60 : 11,839.42 = 2,627.40 : x
  2. Step 2: Convert to fraction form
    7,892.60/11,839.42 = 2,627.40/x
  3. Step 3: Cross multiply
    7,892.60x = 11,839.42 × 2,627.40
  4. Step 4: Simplify right side
    7,892.60x = 31,106,819.77
  5. Step 5: Solve for x
    x = 31,106,819.77/7,892.60
  6. Step 6: Final answer
    x = 3,941.27

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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.