Home / 2,881.31-3,976.29-1,889.19

Finding the Fourth Proportional to 2,881.31, 3,976.29 and 1,889.19

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Solution

The fourth proportional to 2,881.31, 3,976.29 and 1,889.19 is: 2,607.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,881.31 : 3,976.29 = 1,889.19 : x
  2. Step 2: Convert to fraction form
    2,881.31/3,976.29 = 1,889.19/x
  3. Step 3: Cross multiply
    2,881.31x = 3,976.29 × 1,889.19
  4. Step 4: Simplify right side
    2,881.31x = 7,511,967.31
  5. Step 5: Solve for x
    x = 7,511,967.31/2,881.31
  6. Step 6: Final answer
    x = 2,607.14

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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.