Home / 2,801.36-3,865.92-1,622.36

Finding the Fourth Proportional to 2,801.36, 3,865.92 and 1,622.36

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Solution

The fourth proportional to 2,801.36, 3,865.92 and 1,622.36 is: 2,238.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,801.36 : 3,865.92 = 1,622.36 : x
  2. Step 2: Convert to fraction form
    2,801.36/3,865.92 = 1,622.36/x
  3. Step 3: Cross multiply
    2,801.36x = 3,865.92 × 1,622.36
  4. Step 4: Simplify right side
    2,801.36x = 6,271,913.97
  5. Step 5: Solve for x
    x = 6,271,913.97/2,801.36
  6. Step 6: Final answer
    x = 2,238.88

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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.