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Finding the Fourth Proportional to 7,520, 11,280 and 2,048

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Solution

The fourth proportional to 7,520, 11,280 and 2,048 is: 3,072

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,520 : 11,280 = 2,048 : x
  2. Step 2: Convert to fraction form
    7,520/11,280 = 2,048/x
  3. Step 3: Cross multiply
    7,520x = 11,280 × 2,048
  4. Step 4: Simplify right side
    7,520x = 23,101,440
  5. Step 5: Solve for x
    x = 23,101,440/7,520
  6. Step 6: Final answer
    x = 3,072

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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.