Home / 3,121.10-4,683.14-2,081.60

Finding the Fourth Proportional to 3,121.10, 4,683.14 and 2,081.60

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Solution

The fourth proportional to 3,121.10, 4,683.14 and 2,081.60 is: 3,123.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.10 : 4,683.14 = 2,081.60 : x
  2. Step 2: Convert to fraction form
    3,121.10/4,683.14 = 2,081.60/x
  3. Step 3: Cross multiply
    3,121.10x = 4,683.14 × 2,081.60
  4. Step 4: Simplify right side
    3,121.10x = 9,748,424.22
  5. Step 5: Solve for x
    x = 9,748,424.22/3,121.10
  6. Step 6: Final answer
    x = 3,123.39

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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.