Home / 2,066.20-3,099.60-679.60

Finding the Fourth Proportional to 2,066.20, 3,099.60 and 679.60

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Solution

The fourth proportional to 2,066.20, 3,099.60 and 679.60 is: 1,019.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,066.20 : 3,099.60 = 679.60 : x
  2. Step 2: Convert to fraction form
    2,066.20/3,099.60 = 679.60/x
  3. Step 3: Cross multiply
    2,066.20x = 3,099.60 × 679.60
  4. Step 4: Simplify right side
    2,066.20x = 2,106,488.16
  5. Step 5: Solve for x
    x = 2,106,488.16/2,066.20
  6. Step 6: Final answer
    x = 1,019.50

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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.