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Finding the Fourth Proportional to 2,908.33, 4,364.42 and 1,918.98

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Solution

The fourth proportional to 2,908.33, 4,364.42 and 1,918.98 is: 2,879.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,908.33 : 4,364.42 = 1,918.98 : x
  2. Step 2: Convert to fraction form
    2,908.33/4,364.42 = 1,918.98/x
  3. Step 3: Cross multiply
    2,908.33x = 4,364.42 × 1,918.98
  4. Step 4: Simplify right side
    2,908.33x = 8,375,225.10
  5. Step 5: Solve for x
    x = 8,375,225.10/2,908.33
  6. Step 6: Final answer
    x = 2,879.74

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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.