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Finding the Fourth Proportional to 2,107.48, 2,910.60 and 1,641

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Solution

The fourth proportional to 2,107.48, 2,910.60 and 1,641 is: 2,266.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.48 : 2,910.60 = 1,641 : x
  2. Step 2: Convert to fraction form
    2,107.48/2,910.60 = 1,641/x
  3. Step 3: Cross multiply
    2,107.48x = 2,910.60 × 1,641
  4. Step 4: Simplify right side
    2,107.48x = 4,776,294.60
  5. Step 5: Solve for x
    x = 4,776,294.60/2,107.48
  6. Step 6: Final answer
    x = 2,266.35

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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.