Home / 1,519.60-2,280.18-789.76

Finding the Fourth Proportional to 1,519.60, 2,280.18 and 789.76

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Solution

The fourth proportional to 1,519.60, 2,280.18 and 789.76 is: 1,185.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,519.60 : 2,280.18 = 789.76 : x
  2. Step 2: Convert to fraction form
    1,519.60/2,280.18 = 789.76/x
  3. Step 3: Cross multiply
    1,519.60x = 2,280.18 × 789.76
  4. Step 4: Simplify right side
    1,519.60x = 1,800,794.96
  5. Step 5: Solve for x
    x = 1,800,794.96/1,519.60
  6. Step 6: Final answer
    x = 1,185.05

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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.