Home / 2,271.21-3,134.11-1,276.64

Finding the Fourth Proportional to 2,271.21, 3,134.11 and 1,276.64

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Solution

The fourth proportional to 2,271.21, 3,134.11 and 1,276.64 is: 1,761.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,271.21 : 3,134.11 = 1,276.64 : x
  2. Step 2: Convert to fraction form
    2,271.21/3,134.11 = 1,276.64/x
  3. Step 3: Cross multiply
    2,271.21x = 3,134.11 × 1,276.64
  4. Step 4: Simplify right side
    2,271.21x = 4,001,119.35
  5. Step 5: Solve for x
    x = 4,001,119.35/2,271.21
  6. Step 6: Final answer
    x = 1,761.67

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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.