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Finding the Fourth Proportional to 3,377, 4,660.26 and 1,905

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Solution

The fourth proportional to 3,377, 4,660.26 and 1,905 is: 2,628.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,377 : 4,660.26 = 1,905 : x
  2. Step 2: Convert to fraction form
    3,377/4,660.26 = 1,905/x
  3. Step 3: Cross multiply
    3,377x = 4,660.26 × 1,905
  4. Step 4: Simplify right side
    3,377x = 8,877,795.30
  5. Step 5: Solve for x
    x = 8,877,795.30/3,377
  6. Step 6: Final answer
    x = 2,628.90

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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.