Home / 4,741.20-7,111.98-1,819.80

Finding the Fourth Proportional to 4,741.20, 7,111.98 and 1,819.80

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Solution

The fourth proportional to 4,741.20, 7,111.98 and 1,819.80 is: 2,729.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,741.20 : 7,111.98 = 1,819.80 : x
  2. Step 2: Convert to fraction form
    4,741.20/7,111.98 = 1,819.80/x
  3. Step 3: Cross multiply
    4,741.20x = 7,111.98 × 1,819.80
  4. Step 4: Simplify right side
    4,741.20x = 12,942,381.20
  5. Step 5: Solve for x
    x = 12,942,381.20/4,741.20
  6. Step 6: Final answer
    x = 2,729.77

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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.