Home / 2,081.60-3,122.40-2,069.45

Finding the Fourth Proportional to 2,081.60, 3,122.40 and 2,069.45

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Solution

The fourth proportional to 2,081.60, 3,122.40 and 2,069.45 is: 3,104.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,081.60 : 3,122.40 = 2,069.45 : x
  2. Step 2: Convert to fraction form
    2,081.60/3,122.40 = 2,069.45/x
  3. Step 3: Cross multiply
    2,081.60x = 3,122.40 × 2,069.45
  4. Step 4: Simplify right side
    2,081.60x = 6,461,650.68
  5. Step 5: Solve for x
    x = 6,461,650.68/2,081.60
  6. Step 6: Final answer
    x = 3,104.18

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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.