Home / 1,519.77-2,280.90-789.56

Finding the Fourth Proportional to 1,519.77, 2,280.90 and 789.56

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Solution

The fourth proportional to 1,519.77, 2,280.90 and 789.56 is: 1,184.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,519.77 : 2,280.90 = 789.56 : x
  2. Step 2: Convert to fraction form
    1,519.77/2,280.90 = 789.56/x
  3. Step 3: Cross multiply
    1,519.77x = 2,280.90 × 789.56
  4. Step 4: Simplify right side
    1,519.77x = 1,800,907.40
  5. Step 5: Solve for x
    x = 1,800,907.40/1,519.77
  6. Step 6: Final answer
    x = 1,184.99

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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.