Home / 3,995.86-5,515.14-2,578.54

Finding the Fourth Proportional to 3,995.86, 5,515.14 and 2,578.54

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Solution

The fourth proportional to 3,995.86, 5,515.14 and 2,578.54 is: 3,558.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,995.86 : 5,515.14 = 2,578.54 : x
  2. Step 2: Convert to fraction form
    3,995.86/5,515.14 = 2,578.54/x
  3. Step 3: Cross multiply
    3,995.86x = 5,515.14 × 2,578.54
  4. Step 4: Simplify right side
    3,995.86x = 14,221,009.10
  5. Step 5: Solve for x
    x = 14,221,009.10/3,995.86
  6. Step 6: Final answer
    x = 3,558.94

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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.