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Finding the Fourth Proportional to 1,953.24, 2,930.09 and 857.47

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Solution

The fourth proportional to 1,953.24, 2,930.09 and 857.47 is: 1,286.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,953.24 : 2,930.09 = 857.47 : x
  2. Step 2: Convert to fraction form
    1,953.24/2,930.09 = 857.47/x
  3. Step 3: Cross multiply
    1,953.24x = 2,930.09 × 857.47
  4. Step 4: Simplify right side
    1,953.24x = 2,512,464.27
  5. Step 5: Solve for x
    x = 2,512,464.27/1,953.24
  6. Step 6: Final answer
    x = 1,286.31

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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.