Home / 3,855.12-5,782.80-1,258.26

Finding the Fourth Proportional to 3,855.12, 5,782.80 and 1,258.26

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Solution

The fourth proportional to 3,855.12, 5,782.80 and 1,258.26 is: 1,887.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.12 : 5,782.80 = 1,258.26 : x
  2. Step 2: Convert to fraction form
    3,855.12/5,782.80 = 1,258.26/x
  3. Step 3: Cross multiply
    3,855.12x = 5,782.80 × 1,258.26
  4. Step 4: Simplify right side
    3,855.12x = 7,276,265.93
  5. Step 5: Solve for x
    x = 7,276,265.93/3,855.12
  6. Step 6: Final answer
    x = 1,887.43

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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.