Home / 3,857.22-5,785.85-1,260.17

Finding the Fourth Proportional to 3,857.22, 5,785.85 and 1,260.17

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Solution

The fourth proportional to 3,857.22, 5,785.85 and 1,260.17 is: 1,890.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,857.22 : 5,785.85 = 1,260.17 : x
  2. Step 2: Convert to fraction form
    3,857.22/5,785.85 = 1,260.17/x
  3. Step 3: Cross multiply
    3,857.22x = 5,785.85 × 1,260.17
  4. Step 4: Simplify right side
    3,857.22x = 7,291,119.36
  5. Step 5: Solve for x
    x = 7,291,119.36/3,857.22
  6. Step 6: Final answer
    x = 1,890.25

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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.