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Finding the Fourth Proportional to 3,021.88, 4,169 and 1,840.90

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Solution

The fourth proportional to 3,021.88, 4,169 and 1,840.90 is: 2,539.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,021.88 : 4,169 = 1,840.90 : x
  2. Step 2: Convert to fraction form
    3,021.88/4,169 = 1,840.90/x
  3. Step 3: Cross multiply
    3,021.88x = 4,169 × 1,840.90
  4. Step 4: Simplify right side
    3,021.88x = 7,674,712.10
  5. Step 5: Solve for x
    x = 7,674,712.10/3,021.88
  6. Step 6: Final answer
    x = 2,539.71

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1.5x scale

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.