Home / 2,938.20-4,054.42-1,889.48

Finding the Fourth Proportional to 2,938.20, 4,054.42 and 1,889.48

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Solution

The fourth proportional to 2,938.20, 4,054.42 and 1,889.48 is: 2,607.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,938.20 : 4,054.42 = 1,889.48 : x
  2. Step 2: Convert to fraction form
    2,938.20/4,054.42 = 1,889.48/x
  3. Step 3: Cross multiply
    2,938.20x = 4,054.42 × 1,889.48
  4. Step 4: Simplify right side
    2,938.20x = 7,660,745.50
  5. Step 5: Solve for x
    x = 7,660,745.50/2,938.20
  6. Step 6: Final answer
    x = 2,607.29

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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.