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Finding the Fourth Proportional to 3,329.88, 4,990.57 and 1,770.63

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Solution

The fourth proportional to 3,329.88, 4,990.57 and 1,770.63 is: 2,653.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,329.88 : 4,990.57 = 1,770.63 : x
  2. Step 2: Convert to fraction form
    3,329.88/4,990.57 = 1,770.63/x
  3. Step 3: Cross multiply
    3,329.88x = 4,990.57 × 1,770.63
  4. Step 4: Simplify right side
    3,329.88x = 8,836,428.01
  5. Step 5: Solve for x
    x = 8,836,428.01/3,329.88
  6. Step 6: Final answer
    x = 2,653.68

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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.