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Finding the Fourth Proportional to 3,558.43, 4,910.95 and 1,965.45

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Solution

The fourth proportional to 3,558.43, 4,910.95 and 1,965.45 is: 2,712.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,558.43 : 4,910.95 = 1,965.45 : x
  2. Step 2: Convert to fraction form
    3,558.43/4,910.95 = 1,965.45/x
  3. Step 3: Cross multiply
    3,558.43x = 4,910.95 × 1,965.45
  4. Step 4: Simplify right side
    3,558.43x = 9,652,246.17
  5. Step 5: Solve for x
    x = 9,652,246.17/3,558.43
  6. Step 6: Final answer
    x = 2,712.50

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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.