Home / 3,618.49-5,429.42-1,280.26

Finding the Fourth Proportional to 3,618.49, 5,429.42 and 1,280.26

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Solution

The fourth proportional to 3,618.49, 5,429.42 and 1,280.26 is: 1,920.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.49 : 5,429.42 = 1,280.26 : x
  2. Step 2: Convert to fraction form
    3,618.49/5,429.42 = 1,280.26/x
  3. Step 3: Cross multiply
    3,618.49x = 5,429.42 × 1,280.26
  4. Step 4: Simplify right side
    3,618.49x = 6,951,042.10
  5. Step 5: Solve for x
    x = 6,951,042.10/3,618.49
  6. Step 6: Final answer
    x = 1,920.98

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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.