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Finding the Fourth Proportional to 7,728.32, 11,592 and 2,256.32

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Solution

The fourth proportional to 7,728.32, 11,592 and 2,256.32 is: 3,384.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,728.32 : 11,592 = 2,256.32 : x
  2. Step 2: Convert to fraction form
    7,728.32/11,592 = 2,256.32/x
  3. Step 3: Cross multiply
    7,728.32x = 11,592 × 2,256.32
  4. Step 4: Simplify right side
    7,728.32x = 26,155,261.44
  5. Step 5: Solve for x
    x = 26,155,261.44/7,728.32
  6. Step 6: Final answer
    x = 3,384.34

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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.