Home / 2,067.12-2,853.36-1,368.72

Finding the Fourth Proportional to 2,067.12, 2,853.36 and 1,368.72

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Solution

The fourth proportional to 2,067.12, 2,853.36 and 1,368.72 is: 1,889.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,067.12 : 2,853.36 = 1,368.72 : x
  2. Step 2: Convert to fraction form
    2,067.12/2,853.36 = 1,368.72/x
  3. Step 3: Cross multiply
    2,067.12x = 2,853.36 × 1,368.72
  4. Step 4: Simplify right side
    2,067.12x = 3,905,450.90
  5. Step 5: Solve for x
    x = 3,905,450.90/2,067.12
  6. Step 6: Final answer
    x = 1,889.32

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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.