Home / 2,121.93-3,184.74-1,135.53

Finding the Fourth Proportional to 2,121.93, 3,184.74 and 1,135.53

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Solution

The fourth proportional to 2,121.93, 3,184.74 and 1,135.53 is: 1,704.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.93 : 3,184.74 = 1,135.53 : x
  2. Step 2: Convert to fraction form
    2,121.93/3,184.74 = 1,135.53/x
  3. Step 3: Cross multiply
    2,121.93x = 3,184.74 × 1,135.53
  4. Step 4: Simplify right side
    2,121.93x = 3,616,367.81
  5. Step 5: Solve for x
    x = 3,616,367.81/2,121.93
  6. Step 6: Final answer
    x = 1,704.28

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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.