Home / 3,634.31-5,015.36-1,978.31

Finding the Fourth Proportional to 3,634.31, 5,015.36 and 1,978.31

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Solution

The fourth proportional to 3,634.31, 5,015.36 and 1,978.31 is: 2,730.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,634.31 : 5,015.36 = 1,978.31 : x
  2. Step 2: Convert to fraction form
    3,634.31/5,015.36 = 1,978.31/x
  3. Step 3: Cross multiply
    3,634.31x = 5,015.36 × 1,978.31
  4. Step 4: Simplify right side
    3,634.31x = 9,921,954.33
  5. Step 5: Solve for x
    x = 9,921,954.33/3,634.31
  6. Step 6: Final answer
    x = 2,730.08

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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.