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Finding the Fourth Proportional to 3,383.74, 4,669.47 and 1,891.68

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Solution

The fourth proportional to 3,383.74, 4,669.47 and 1,891.68 is: 2,610.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,383.74 : 4,669.47 = 1,891.68 : x
  2. Step 2: Convert to fraction form
    3,383.74/4,669.47 = 1,891.68/x
  3. Step 3: Cross multiply
    3,383.74x = 4,669.47 × 1,891.68
  4. Step 4: Simplify right side
    3,383.74x = 8,833,143.01
  5. Step 5: Solve for x
    x = 8,833,143.01/3,383.74
  6. Step 6: Final answer
    x = 2,610.47

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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.