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Finding the Fourth Proportional to 1,825.59, 2,739.50 and 671.43

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Solution

The fourth proportional to 1,825.59, 2,739.50 and 671.43 is: 1,007.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,825.59 : 2,739.50 = 671.43 : x
  2. Step 2: Convert to fraction form
    1,825.59/2,739.50 = 671.43/x
  3. Step 3: Cross multiply
    1,825.59x = 2,739.50 × 671.43
  4. Step 4: Simplify right side
    1,825.59x = 1,839,379.13
  5. Step 5: Solve for x
    x = 1,839,379.13/1,825.59
  6. Step 6: Final answer
    x = 1,007.55

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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.