Home / 2,280.13-3,420.19-1,308.73

Finding the Fourth Proportional to 2,280.13, 3,420.19 and 1,308.73

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Solution

The fourth proportional to 2,280.13, 3,420.19 and 1,308.73 is: 1,963.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.13 : 3,420.19 = 1,308.73 : x
  2. Step 2: Convert to fraction form
    2,280.13/3,420.19 = 1,308.73/x
  3. Step 3: Cross multiply
    2,280.13x = 3,420.19 × 1,308.73
  4. Step 4: Simplify right side
    2,280.13x = 4,476,105.26
  5. Step 5: Solve for x
    x = 4,476,105.26/2,280.13
  6. Step 6: Final answer
    x = 1,963.09

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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.