Home / 3,140.28-4,706.78-2,099.43

Finding the Fourth Proportional to 3,140.28, 4,706.78 and 2,099.43

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Solution

The fourth proportional to 3,140.28, 4,706.78 and 2,099.43 is: 3,146.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.28 : 4,706.78 = 2,099.43 : x
  2. Step 2: Convert to fraction form
    3,140.28/4,706.78 = 2,099.43/x
  3. Step 3: Cross multiply
    3,140.28x = 4,706.78 × 2,099.43
  4. Step 4: Simplify right side
    3,140.28x = 9,881,544.64
  5. Step 5: Solve for x
    x = 9,881,544.64/3,140.28
  6. Step 6: Final answer
    x = 3,146.71

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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.