Home / 2,280.45-3,420.68-1,306.65

Finding the Fourth Proportional to 2,280.45, 3,420.68 and 1,306.65

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Solution

The fourth proportional to 2,280.45, 3,420.68 and 1,306.65 is: 1,959.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.45 : 3,420.68 = 1,306.65 : x
  2. Step 2: Convert to fraction form
    2,280.45/3,420.68 = 1,306.65/x
  3. Step 3: Cross multiply
    2,280.45x = 3,420.68 × 1,306.65
  4. Step 4: Simplify right side
    2,280.45x = 4,469,624.99
  5. Step 5: Solve for x
    x = 4,469,624.99/2,280.45
  6. Step 6: Final answer
    x = 1,959.98

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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.