Home / 5,518.40-8,266.80-3,320.60

Finding the Fourth Proportional to 5,518.40, 8,266.80 and 3,320.60

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Solution

The fourth proportional to 5,518.40, 8,266.80 and 3,320.60 is: 4,974.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,518.40 : 8,266.80 = 3,320.60 : x
  2. Step 2: Convert to fraction form
    5,518.40/8,266.80 = 3,320.60/x
  3. Step 3: Cross multiply
    5,518.40x = 8,266.80 × 3,320.60
  4. Step 4: Simplify right side
    5,518.40x = 27,450,736.08
  5. Step 5: Solve for x
    x = 27,450,736.08/5,518.40
  6. Step 6: Final answer
    x = 4,974.40

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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.