Home / 2,853.82-3,938.79-1,658.97

Finding the Fourth Proportional to 2,853.82, 3,938.79 and 1,658.97

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Solution

The fourth proportional to 2,853.82, 3,938.79 and 1,658.97 is: 2,289.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,853.82 : 3,938.79 = 1,658.97 : x
  2. Step 2: Convert to fraction form
    2,853.82/3,938.79 = 1,658.97/x
  3. Step 3: Cross multiply
    2,853.82x = 3,938.79 × 1,658.97
  4. Step 4: Simplify right side
    2,853.82x = 6,534,334.45
  5. Step 5: Solve for x
    x = 6,534,334.45/2,853.82
  6. Step 6: Final answer
    x = 2,289.68

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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.