Home / 2,438.36-3,661.38-2,115.80

Finding the Fourth Proportional to 2,438.36, 3,661.38 and 2,115.80

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Solution

The fourth proportional to 2,438.36, 3,661.38 and 2,115.80 is: 3,177.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,438.36 : 3,661.38 = 2,115.80 : x
  2. Step 2: Convert to fraction form
    2,438.36/3,661.38 = 2,115.80/x
  3. Step 3: Cross multiply
    2,438.36x = 3,661.38 × 2,115.80
  4. Step 4: Simplify right side
    2,438.36x = 7,746,747.80
  5. Step 5: Solve for x
    x = 7,746,747.80/2,438.36
  6. Step 6: Final answer
    x = 3,177.03

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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.