Home / 2,220.63-3,077.43-2,189.31

Finding the Fourth Proportional to 2,220.63, 3,077.43 and 2,189.31

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Solution

The fourth proportional to 2,220.63, 3,077.43 and 2,189.31 is: 3,034.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.63 : 3,077.43 = 2,189.31 : x
  2. Step 2: Convert to fraction form
    2,220.63/3,077.43 = 2,189.31/x
  3. Step 3: Cross multiply
    2,220.63x = 3,077.43 × 2,189.31
  4. Step 4: Simplify right side
    2,220.63x = 6,737,448.27
  5. Step 5: Solve for x
    x = 6,737,448.27/2,220.63
  6. Step 6: Final answer
    x = 3,034.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.