Home / 2,651.96-3,977.70-1,335.20

Finding the Fourth Proportional to 2,651.96, 3,977.70 and 1,335.20

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Solution

The fourth proportional to 2,651.96, 3,977.70 and 1,335.20 is: 2,002.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,651.96 : 3,977.70 = 1,335.20 : x
  2. Step 2: Convert to fraction form
    2,651.96/3,977.70 = 1,335.20/x
  3. Step 3: Cross multiply
    2,651.96x = 3,977.70 × 1,335.20
  4. Step 4: Simplify right side
    2,651.96x = 5,311,000.14
  5. Step 5: Solve for x
    x = 5,311,000.14/2,651.96
  6. Step 6: Final answer
    x = 2,002.67

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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.