Home / 3,857.12-5,785.56-1,083.80

Finding the Fourth Proportional to 3,857.12, 5,785.56 and 1,083.80

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Solution

The fourth proportional to 3,857.12, 5,785.56 and 1,083.80 is: 1,625.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,857.12 : 5,785.56 = 1,083.80 : x
  2. Step 2: Convert to fraction form
    3,857.12/5,785.56 = 1,083.80/x
  3. Step 3: Cross multiply
    3,857.12x = 5,785.56 × 1,083.80
  4. Step 4: Simplify right side
    3,857.12x = 6,270,389.93
  5. Step 5: Solve for x
    x = 6,270,389.93/3,857.12
  6. Step 6: Final answer
    x = 1,625.67

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1.5x scale

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.