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Finding the Fourth Proportional to 3,100.87, 4,278.99 and 1,841.86

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Solution

The fourth proportional to 3,100.87, 4,278.99 and 1,841.86 is: 2,541.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,100.87 : 4,278.99 = 1,841.86 : x
  2. Step 2: Convert to fraction form
    3,100.87/4,278.99 = 1,841.86/x
  3. Step 3: Cross multiply
    3,100.87x = 4,278.99 × 1,841.86
  4. Step 4: Simplify right side
    3,100.87x = 7,881,289.82
  5. Step 5: Solve for x
    x = 7,881,289.82/3,100.87
  6. Step 6: Final answer
    x = 2,541.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.