Home / 2,801.12-3,865.37-1,621.98

Finding the Fourth Proportional to 2,801.12, 3,865.37 and 1,621.98

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Solution

The fourth proportional to 2,801.12, 3,865.37 and 1,621.98 is: 2,238.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,801.12 : 3,865.37 = 1,621.98 : x
  2. Step 2: Convert to fraction form
    2,801.12/3,865.37 = 1,621.98/x
  3. Step 3: Cross multiply
    2,801.12x = 3,865.37 × 1,621.98
  4. Step 4: Simplify right side
    2,801.12x = 6,269,544.72
  5. Step 5: Solve for x
    x = 6,269,544.72/2,801.12
  6. Step 6: Final answer
    x = 2,238.23

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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.