Home / 2,801.90-3,865.77-1,622.75

Finding the Fourth Proportional to 2,801.90, 3,865.77 and 1,622.75

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Solution

The fourth proportional to 2,801.90, 3,865.77 and 1,622.75 is: 2,238.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,801.90 : 3,865.77 = 1,622.75 : x
  2. Step 2: Convert to fraction form
    2,801.90/3,865.77 = 1,622.75/x
  3. Step 3: Cross multiply
    2,801.90x = 3,865.77 × 1,622.75
  4. Step 4: Simplify right side
    2,801.90x = 6,273,158.94
  5. Step 5: Solve for x
    x = 6,273,158.94/2,801.90
  6. Step 6: Final answer
    x = 2,238.89

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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.