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Finding the Fourth Proportional to 7,900.72, 11,850.60 and 3,283.76

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Solution

The fourth proportional to 7,900.72, 11,850.60 and 3,283.76 is: 4,925.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,900.72 : 11,850.60 = 3,283.76 : x
  2. Step 2: Convert to fraction form
    7,900.72/11,850.60 = 3,283.76/x
  3. Step 3: Cross multiply
    7,900.72x = 11,850.60 × 3,283.76
  4. Step 4: Simplify right side
    7,900.72x = 38,914,526.26
  5. Step 5: Solve for x
    x = 38,914,526.26/7,900.72
  6. Step 6: Final answer
    x = 4,925.44

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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.