Home / 2,947.10-4,067.08-1,620.84

Finding the Fourth Proportional to 2,947.10, 4,067.08 and 1,620.84

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Solution

The fourth proportional to 2,947.10, 4,067.08 and 1,620.84 is: 2,236.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.10 : 4,067.08 = 1,620.84 : x
  2. Step 2: Convert to fraction form
    2,947.10/4,067.08 = 1,620.84/x
  3. Step 3: Cross multiply
    2,947.10x = 4,067.08 × 1,620.84
  4. Step 4: Simplify right side
    2,947.10x = 6,592,085.95
  5. Step 5: Solve for x
    x = 6,592,085.95/2,947.10
  6. Step 6: Final answer
    x = 2,236.80

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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.