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Finding the Fourth Proportional to 1,953.36, 2,930.33 and 843.08

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Solution

The fourth proportional to 1,953.36, 2,930.33 and 843.08 is: 1,264.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,953.36 : 2,930.33 = 843.08 : x
  2. Step 2: Convert to fraction form
    1,953.36/2,930.33 = 843.08/x
  3. Step 3: Cross multiply
    1,953.36x = 2,930.33 × 843.08
  4. Step 4: Simplify right side
    1,953.36x = 2,470,512.05
  5. Step 5: Solve for x
    x = 2,470,512.05/1,953.36
  6. Step 6: Final answer
    x = 1,264.75

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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.