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Finding the Fourth Proportional to 1,671.81, 2,505.45 and 794.70

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Solution

The fourth proportional to 1,671.81, 2,505.45 and 794.70 is: 1,190.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,671.81 : 2,505.45 = 794.70 : x
  2. Step 2: Convert to fraction form
    1,671.81/2,505.45 = 794.70/x
  3. Step 3: Cross multiply
    1,671.81x = 2,505.45 × 794.70
  4. Step 4: Simplify right side
    1,671.81x = 1,991,081.12
  5. Step 5: Solve for x
    x = 1,991,081.12/1,671.81
  6. Step 6: Final answer
    x = 1,190.97

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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.