Home / 3,071.31-4,239.99-2,274

Finding the Fourth Proportional to 3,071.31, 4,239.99 and 2,274

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Solution

The fourth proportional to 3,071.31, 4,239.99 and 2,274 is: 3,139.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,071.31 : 4,239.99 = 2,274 : x
  2. Step 2: Convert to fraction form
    3,071.31/4,239.99 = 2,274/x
  3. Step 3: Cross multiply
    3,071.31x = 4,239.99 × 2,274
  4. Step 4: Simplify right side
    3,071.31x = 9,641,737.26
  5. Step 5: Solve for x
    x = 9,641,737.26/3,071.31
  6. Step 6: Final answer
    x = 3,139.29

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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.