Home / 3,858.80-5,325.72-3,228.40

Finding the Fourth Proportional to 3,858.80, 5,325.72 and 3,228.40

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Solution

The fourth proportional to 3,858.80, 5,325.72 and 3,228.40 is: 4,455.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,858.80 : 5,325.72 = 3,228.40 : x
  2. Step 2: Convert to fraction form
    3,858.80/5,325.72 = 3,228.40/x
  3. Step 3: Cross multiply
    3,858.80x = 5,325.72 × 3,228.40
  4. Step 4: Simplify right side
    3,858.80x = 17,193,554.45
  5. Step 5: Solve for x
    x = 17,193,554.45/3,858.80
  6. Step 6: Final answer
    x = 4,455.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.