Home / 2,771.44-4,154.86-1,128.76

Finding the Fourth Proportional to 2,771.44, 4,154.86 and 1,128.76

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Solution

The fourth proportional to 2,771.44, 4,154.86 and 1,128.76 is: 1,692.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,771.44 : 4,154.86 = 1,128.76 : x
  2. Step 2: Convert to fraction form
    2,771.44/4,154.86 = 1,128.76/x
  3. Step 3: Cross multiply
    2,771.44x = 4,154.86 × 1,128.76
  4. Step 4: Simplify right side
    2,771.44x = 4,689,839.77
  5. Step 5: Solve for x
    x = 4,689,839.77/2,771.44
  6. Step 6: Final answer
    x = 1,692.20

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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.