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Finding the Fourth Proportional to 1,950.81, 2,920.80 and 1,518.81

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Solution

The fourth proportional to 1,950.81, 2,920.80 and 1,518.81 is: 2,274.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,950.81 : 2,920.80 = 1,518.81 : x
  2. Step 2: Convert to fraction form
    1,950.81/2,920.80 = 1,518.81/x
  3. Step 3: Cross multiply
    1,950.81x = 2,920.80 × 1,518.81
  4. Step 4: Simplify right side
    1,950.81x = 4,436,140.25
  5. Step 5: Solve for x
    x = 4,436,140.25/1,950.81
  6. Step 6: Final answer
    x = 2,274.00

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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.