Home / 7,072.20-10,611.74-2,855.28

Finding the Fourth Proportional to 7,072.20, 10,611.74 and 2,855.28

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Solution

The fourth proportional to 7,072.20, 10,611.74 and 2,855.28 is: 4,284.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,072.20 : 10,611.74 = 2,855.28 : x
  2. Step 2: Convert to fraction form
    7,072.20/10,611.74 = 2,855.28/x
  3. Step 3: Cross multiply
    7,072.20x = 10,611.74 × 2,855.28
  4. Step 4: Simplify right side
    7,072.20x = 30,299,488.99
  5. Step 5: Solve for x
    x = 30,299,488.99/7,072.20
  6. Step 6: Final answer
    x = 4,284.31

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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.