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Finding the Fourth Proportional to 1,905.07, 2,857.94 and 673.19

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Solution

The fourth proportional to 1,905.07, 2,857.94 and 673.19 is: 1,009.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.07 : 2,857.94 = 673.19 : x
  2. Step 2: Convert to fraction form
    1,905.07/2,857.94 = 673.19/x
  3. Step 3: Cross multiply
    1,905.07x = 2,857.94 × 673.19
  4. Step 4: Simplify right side
    1,905.07x = 1,923,945.46
  5. Step 5: Solve for x
    x = 1,923,945.46/1,905.07
  6. Step 6: Final answer
    x = 1,009.91

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1.5x scale

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.