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Finding the Fourth Proportional to 2,629.57, 3,943.19 and 984.96

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Solution

The fourth proportional to 2,629.57, 3,943.19 and 984.96 is: 1,477.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,629.57 : 3,943.19 = 984.96 : x
  2. Step 2: Convert to fraction form
    2,629.57/3,943.19 = 984.96/x
  3. Step 3: Cross multiply
    2,629.57x = 3,943.19 × 984.96
  4. Step 4: Simplify right side
    2,629.57x = 3,883,881.34
  5. Step 5: Solve for x
    x = 3,883,881.34/2,629.57
  6. Step 6: Final answer
    x = 1,477.00

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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.