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Finding the Fourth Proportional to 2,418.85, 3,628.88 and 957.81

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Solution

The fourth proportional to 2,418.85, 3,628.88 and 957.81 is: 1,436.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,418.85 : 3,628.88 = 957.81 : x
  2. Step 2: Convert to fraction form
    2,418.85/3,628.88 = 957.81/x
  3. Step 3: Cross multiply
    2,418.85x = 3,628.88 × 957.81
  4. Step 4: Simplify right side
    2,418.85x = 3,475,777.55
  5. Step 5: Solve for x
    x = 3,475,777.55/2,418.85
  6. Step 6: Final answer
    x = 1,436.95

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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.