Home / 2,231.55-3,346.38-770.85

Finding the Fourth Proportional to 2,231.55, 3,346.38 and 770.85

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Solution

The fourth proportional to 2,231.55, 3,346.38 and 770.85 is: 1,155.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,231.55 : 3,346.38 = 770.85 : x
  2. Step 2: Convert to fraction form
    2,231.55/3,346.38 = 770.85/x
  3. Step 3: Cross multiply
    2,231.55x = 3,346.38 × 770.85
  4. Step 4: Simplify right side
    2,231.55x = 2,579,557.02
  5. Step 5: Solve for x
    x = 2,579,557.02/2,231.55
  6. Step 6: Final answer
    x = 1,155.95

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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.