Home / 2,836.90-3,905.67-2,238.31

Finding the Fourth Proportional to 2,836.90, 3,905.67 and 2,238.31

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Solution

The fourth proportional to 2,836.90, 3,905.67 and 2,238.31 is: 3,081.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,836.90 : 3,905.67 = 2,238.31 : x
  2. Step 2: Convert to fraction form
    2,836.90/3,905.67 = 2,238.31/x
  3. Step 3: Cross multiply
    2,836.90x = 3,905.67 × 2,238.31
  4. Step 4: Simplify right side
    2,836.90x = 8,742,100.22
  5. Step 5: Solve for x
    x = 8,742,100.22/2,836.90
  6. Step 6: Final answer
    x = 3,081.57

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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.