Home / 3,608.15-4,977.86-2,115.52

Finding the Fourth Proportional to 3,608.15, 4,977.86 and 2,115.52

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Solution

The fourth proportional to 3,608.15, 4,977.86 and 2,115.52 is: 2,918.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,608.15 : 4,977.86 = 2,115.52 : x
  2. Step 2: Convert to fraction form
    3,608.15/4,977.86 = 2,115.52/x
  3. Step 3: Cross multiply
    3,608.15x = 4,977.86 × 2,115.52
  4. Step 4: Simplify right side
    3,608.15x = 10,530,739.36
  5. Step 5: Solve for x
    x = 10,530,739.36/3,608.15
  6. Step 6: Final answer
    x = 2,918.60

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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.