Home / 2,853.91-3,938.20-1,577.73

Finding the Fourth Proportional to 2,853.91, 3,938.20 and 1,577.73

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Solution

The fourth proportional to 2,853.91, 3,938.20 and 1,577.73 is: 2,177.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,853.91 : 3,938.20 = 1,577.73 : x
  2. Step 2: Convert to fraction form
    2,853.91/3,938.20 = 1,577.73/x
  3. Step 3: Cross multiply
    2,853.91x = 3,938.20 × 1,577.73
  4. Step 4: Simplify right side
    2,853.91x = 6,213,427.11
  5. Step 5: Solve for x
    x = 6,213,427.11/2,853.91
  6. Step 6: Final answer
    x = 2,177.16

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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.