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Finding the Fourth Proportional to 2,673.84, 4,009.73 and 918.51

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Solution

The fourth proportional to 2,673.84, 4,009.73 and 918.51 is: 1,377.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,673.84 : 4,009.73 = 918.51 : x
  2. Step 2: Convert to fraction form
    2,673.84/4,009.73 = 918.51/x
  3. Step 3: Cross multiply
    2,673.84x = 4,009.73 × 918.51
  4. Step 4: Simplify right side
    2,673.84x = 3,682,972.51
  5. Step 5: Solve for x
    x = 3,682,972.51/2,673.84
  6. Step 6: Final answer
    x = 1,377.41

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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.