Home / 3,318.24-4,977.81-1,126.38

Finding the Fourth Proportional to 3,318.24, 4,977.81 and 1,126.38

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Solution

The fourth proportional to 3,318.24, 4,977.81 and 1,126.38 is: 1,689.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.24 : 4,977.81 = 1,126.38 : x
  2. Step 2: Convert to fraction form
    3,318.24/4,977.81 = 1,126.38/x
  3. Step 3: Cross multiply
    3,318.24x = 4,977.81 × 1,126.38
  4. Step 4: Simplify right side
    3,318.24x = 5,606,880.74
  5. Step 5: Solve for x
    x = 5,606,880.74/3,318.24
  6. Step 6: Final answer
    x = 1,689.72

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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.