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Finding the Fourth Proportional to 1,953.24, 2,930.08 and 857.46

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Solution

The fourth proportional to 1,953.24, 2,930.08 and 857.46 is: 1,286.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,953.24 : 2,930.08 = 857.46 : x
  2. Step 2: Convert to fraction form
    1,953.24/2,930.08 = 857.46/x
  3. Step 3: Cross multiply
    1,953.24x = 2,930.08 × 857.46
  4. Step 4: Simplify right side
    1,953.24x = 2,512,426.40
  5. Step 5: Solve for x
    x = 2,512,426.40/1,953.24
  6. Step 6: Final answer
    x = 1,286.29

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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.