Home / 2,229.63-3,077.19-1,390.58

Finding the Fourth Proportional to 2,229.63, 3,077.19 and 1,390.58

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Solution

The fourth proportional to 2,229.63, 3,077.19 and 1,390.58 is: 1,919.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,229.63 : 3,077.19 = 1,390.58 : x
  2. Step 2: Convert to fraction form
    2,229.63/3,077.19 = 1,390.58/x
  3. Step 3: Cross multiply
    2,229.63x = 3,077.19 × 1,390.58
  4. Step 4: Simplify right side
    2,229.63x = 4,279,092.33
  5. Step 5: Solve for x
    x = 4,279,092.33/2,229.63
  6. Step 6: Final answer
    x = 1,919.20

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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.