Home / 2,115.08-2,918.80-1,183.58

Finding the Fourth Proportional to 2,115.08, 2,918.80 and 1,183.58

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Solution

The fourth proportional to 2,115.08, 2,918.80 and 1,183.58 is: 1,633.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.08 : 2,918.80 = 1,183.58 : x
  2. Step 2: Convert to fraction form
    2,115.08/2,918.80 = 1,183.58/x
  3. Step 3: Cross multiply
    2,115.08x = 2,918.80 × 1,183.58
  4. Step 4: Simplify right side
    2,115.08x = 3,454,631.13
  5. Step 5: Solve for x
    x = 3,454,631.13/2,115.08
  6. Step 6: Final answer
    x = 1,633.33

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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.