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Finding the Fourth Proportional to 3,316.87, 4,975.05 and 1,929.32

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Solution

The fourth proportional to 3,316.87, 4,975.05 and 1,929.32 is: 2,893.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,316.87 : 4,975.05 = 1,929.32 : x
  2. Step 2: Convert to fraction form
    3,316.87/4,975.05 = 1,929.32/x
  3. Step 3: Cross multiply
    3,316.87x = 4,975.05 × 1,929.32
  4. Step 4: Simplify right side
    3,316.87x = 9,598,463.47
  5. Step 5: Solve for x
    x = 9,598,463.47/3,316.87
  6. Step 6: Final answer
    x = 2,893.83

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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.