Home / 2,155.16-3,226.74-1,415.96

Finding the Fourth Proportional to 2,155.16, 3,226.74 and 1,415.96

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Solution

The fourth proportional to 2,155.16, 3,226.74 and 1,415.96 is: 2,120.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.16 : 3,226.74 = 1,415.96 : x
  2. Step 2: Convert to fraction form
    2,155.16/3,226.74 = 1,415.96/x
  3. Step 3: Cross multiply
    2,155.16x = 3,226.74 × 1,415.96
  4. Step 4: Simplify right side
    2,155.16x = 4,568,934.77
  5. Step 5: Solve for x
    x = 4,568,934.77/2,155.16
  6. Step 6: Final answer
    x = 2,120.00

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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.