Home / 2,758.64-3,805.61-1,638.95

Finding the Fourth Proportional to 2,758.64, 3,805.61 and 1,638.95

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Solution

The fourth proportional to 2,758.64, 3,805.61 and 1,638.95 is: 2,260.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,758.64 : 3,805.61 = 1,638.95 : x
  2. Step 2: Convert to fraction form
    2,758.64/3,805.61 = 1,638.95/x
  3. Step 3: Cross multiply
    2,758.64x = 3,805.61 × 1,638.95
  4. Step 4: Simplify right side
    2,758.64x = 6,237,177.29
  5. Step 5: Solve for x
    x = 6,237,177.29/2,758.64
  6. Step 6: Final answer
    x = 2,260.97

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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.