Home / 3,128.15-4,692.24-1,279.27

Finding the Fourth Proportional to 3,128.15, 4,692.24 and 1,279.27

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Solution

The fourth proportional to 3,128.15, 4,692.24 and 1,279.27 is: 1,918.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.15 : 4,692.24 = 1,279.27 : x
  2. Step 2: Convert to fraction form
    3,128.15/4,692.24 = 1,279.27/x
  3. Step 3: Cross multiply
    3,128.15x = 4,692.24 × 1,279.27
  4. Step 4: Simplify right side
    3,128.15x = 6,002,641.86
  5. Step 5: Solve for x
    x = 6,002,641.86/3,128.15
  6. Step 6: Final answer
    x = 1,918.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.