Home / 2,211.76-3,051.84-1,372.20

Finding the Fourth Proportional to 2,211.76, 3,051.84 and 1,372.20

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Solution

The fourth proportional to 2,211.76, 3,051.84 and 1,372.20 is: 1,893.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.76 : 3,051.84 = 1,372.20 : x
  2. Step 2: Convert to fraction form
    2,211.76/3,051.84 = 1,372.20/x
  3. Step 3: Cross multiply
    2,211.76x = 3,051.84 × 1,372.20
  4. Step 4: Simplify right side
    2,211.76x = 4,187,734.85
  5. Step 5: Solve for x
    x = 4,187,734.85/2,211.76
  6. Step 6: Final answer
    x = 1,893.39

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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.