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Finding the Fourth Proportional to 7,954.32, 11,925.72 and 3,791.76

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Solution

The fourth proportional to 7,954.32, 11,925.72 and 3,791.76 is: 5,684.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,954.32 : 11,925.72 = 3,791.76 : x
  2. Step 2: Convert to fraction form
    7,954.32/11,925.72 = 3,791.76/x
  3. Step 3: Cross multiply
    7,954.32x = 11,925.72 × 3,791.76
  4. Step 4: Simplify right side
    7,954.32x = 45,219,468.07
  5. Step 5: Solve for x
    x = 45,219,468.07/7,954.32
  6. Step 6: Final answer
    x = 5,684.89

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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.