Home / 2,280.57-3,147.19-1,285.84

Finding the Fourth Proportional to 2,280.57, 3,147.19 and 1,285.84

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Solution

The fourth proportional to 2,280.57, 3,147.19 and 1,285.84 is: 1,774.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.57 : 3,147.19 = 1,285.84 : x
  2. Step 2: Convert to fraction form
    2,280.57/3,147.19 = 1,285.84/x
  3. Step 3: Cross multiply
    2,280.57x = 3,147.19 × 1,285.84
  4. Step 4: Simplify right side
    2,280.57x = 4,046,794.45
  5. Step 5: Solve for x
    x = 4,046,794.45/2,280.57
  6. Step 6: Final answer
    x = 1,774.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.