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Finding the Fourth Proportional to 19,168, 28,752 and 5,317

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Solution

The fourth proportional to 19,168, 28,752 and 5,317 is: 7,975.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,168 : 28,752 = 5,317 : x
  2. Step 2: Convert to fraction form
    19,168/28,752 = 5,317/x
  3. Step 3: Cross multiply
    19,168x = 28,752 × 5,317
  4. Step 4: Simplify right side
    19,168x = 152,874,384
  5. Step 5: Solve for x
    x = 152,874,384/19,168
  6. Step 6: Final answer
    x = 7,975.50

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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.