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Finding the Fourth Proportional to 2,673.68, 4,010.99 and 918.54

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Solution

The fourth proportional to 2,673.68, 4,010.99 and 918.54 is: 1,377.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,673.68 : 4,010.99 = 918.54 : x
  2. Step 2: Convert to fraction form
    2,673.68/4,010.99 = 918.54/x
  3. Step 3: Cross multiply
    2,673.68x = 4,010.99 × 918.54
  4. Step 4: Simplify right side
    2,673.68x = 3,684,250.16
  5. Step 5: Solve for x
    x = 3,684,250.16/2,673.68
  6. Step 6: Final answer
    x = 1,377.97

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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.