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Finding the Fourth Proportional to 1,426.23, 1,968.12 and 836.73

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Solution

The fourth proportional to 1,426.23, 1,968.12 and 836.73 is: 1,154.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.23 : 1,968.12 = 836.73 : x
  2. Step 2: Convert to fraction form
    1,426.23/1,968.12 = 836.73/x
  3. Step 3: Cross multiply
    1,426.23x = 1,968.12 × 836.73
  4. Step 4: Simplify right side
    1,426.23x = 1,646,785.05
  5. Step 5: Solve for x
    x = 1,646,785.05/1,426.23
  6. Step 6: Final answer
    x = 1,154.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.