Home / 2,069.35-2,855.47-1,230.09

Finding the Fourth Proportional to 2,069.35, 2,855.47 and 1,230.09

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Solution

The fourth proportional to 2,069.35, 2,855.47 and 1,230.09 is: 1,697.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,069.35 : 2,855.47 = 1,230.09 : x
  2. Step 2: Convert to fraction form
    2,069.35/2,855.47 = 1,230.09/x
  3. Step 3: Cross multiply
    2,069.35x = 2,855.47 × 1,230.09
  4. Step 4: Simplify right side
    2,069.35x = 3,512,485.09
  5. Step 5: Solve for x
    x = 3,512,485.09/2,069.35
  6. Step 6: Final answer
    x = 1,697.39

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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.