Home / 1,945.90-2,919.23-629.98

Finding the Fourth Proportional to 1,945.90, 2,919.23 and 629.98

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Solution

The fourth proportional to 1,945.90, 2,919.23 and 629.98 is: 945.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.90 : 2,919.23 = 629.98 : x
  2. Step 2: Convert to fraction form
    1,945.90/2,919.23 = 629.98/x
  3. Step 3: Cross multiply
    1,945.90x = 2,919.23 × 629.98
  4. Step 4: Simplify right side
    1,945.90x = 1,839,068.39
  5. Step 5: Solve for x
    x = 1,839,068.39/1,945.90
  6. Step 6: Final answer
    x = 945.10

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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.