Home / 3,318.21-4,977.30-1,126.95

Finding the Fourth Proportional to 3,318.21, 4,977.30 and 1,126.95

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Solution

The fourth proportional to 3,318.21, 4,977.30 and 1,126.95 is: 1,690.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.21 : 4,977.30 = 1,126.95 : x
  2. Step 2: Convert to fraction form
    3,318.21/4,977.30 = 1,126.95/x
  3. Step 3: Cross multiply
    3,318.21x = 4,977.30 × 1,126.95
  4. Step 4: Simplify right side
    3,318.21x = 5,609,168.24
  5. Step 5: Solve for x
    x = 5,609,168.24/3,318.21
  6. Step 6: Final answer
    x = 1,690.42

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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.