Home / 3,640.14-5,456.70-1,447.20

Finding the Fourth Proportional to 3,640.14, 5,456.70 and 1,447.20

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Solution

The fourth proportional to 3,640.14, 5,456.70 and 1,447.20 is: 2,169.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,640.14 : 5,456.70 = 1,447.20 : x
  2. Step 2: Convert to fraction form
    3,640.14/5,456.70 = 1,447.20/x
  3. Step 3: Cross multiply
    3,640.14x = 5,456.70 × 1,447.20
  4. Step 4: Simplify right side
    3,640.14x = 7,896,936.24
  5. Step 5: Solve for x
    x = 7,896,936.24/3,640.14
  6. Step 6: Final answer
    x = 2,169.40

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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.