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Finding the Fourth Proportional to 7,881.09, 10,880.97 and 4,900.98

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Solution

The fourth proportional to 7,881.09, 10,880.97 and 4,900.98 is: 6,766.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881.09 : 10,880.97 = 4,900.98 : x
  2. Step 2: Convert to fraction form
    7,881.09/10,880.97 = 4,900.98/x
  3. Step 3: Cross multiply
    7,881.09x = 10,880.97 × 4,900.98
  4. Step 4: Simplify right side
    7,881.09x = 53,327,416.35
  5. Step 5: Solve for x
    x = 53,327,416.35/7,881.09
  6. Step 6: Final answer
    x = 6,766.50

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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.