Home / 3,155.54-4,355.03-1,896.65

Finding the Fourth Proportional to 3,155.54, 4,355.03 and 1,896.65

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Solution

The fourth proportional to 3,155.54, 4,355.03 and 1,896.65 is: 2,617.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,155.54 : 4,355.03 = 1,896.65 : x
  2. Step 2: Convert to fraction form
    3,155.54/4,355.03 = 1,896.65/x
  3. Step 3: Cross multiply
    3,155.54x = 4,355.03 × 1,896.65
  4. Step 4: Simplify right side
    3,155.54x = 8,259,989.32
  5. Step 5: Solve for x
    x = 8,259,989.32/3,155.54
  6. Step 6: Final answer
    x = 2,617.61

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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.