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Finding the Fourth Proportional to 2,950.80, 4,428.93 and 1,490.97

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Solution

The fourth proportional to 2,950.80, 4,428.93 and 1,490.97 is: 2,237.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,950.80 : 4,428.93 = 1,490.97 : x
  2. Step 2: Convert to fraction form
    2,950.80/4,428.93 = 1,490.97/x
  3. Step 3: Cross multiply
    2,950.80x = 4,428.93 × 1,490.97
  4. Step 4: Simplify right side
    2,950.80x = 6,603,401.76
  5. Step 5: Solve for x
    x = 6,603,401.76/2,950.80
  6. Step 6: Final answer
    x = 2,237.83

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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.