Home / 2,628.60-3,942.89-1,069.45

Finding the Fourth Proportional to 2,628.60, 3,942.89 and 1,069.45

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Solution

The fourth proportional to 2,628.60, 3,942.89 and 1,069.45 is: 1,604.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,628.60 : 3,942.89 = 1,069.45 : x
  2. Step 2: Convert to fraction form
    2,628.60/3,942.89 = 1,069.45/x
  3. Step 3: Cross multiply
    2,628.60x = 3,942.89 × 1,069.45
  4. Step 4: Simplify right side
    2,628.60x = 4,216,704.00
  5. Step 5: Solve for x
    x = 4,216,704.00/2,628.60
  6. Step 6: Final answer
    x = 1,604.17

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Similar ratio
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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.