Home / 2,115.28-2,918.88-1,183.84

Finding the Fourth Proportional to 2,115.28, 2,918.88 and 1,183.84

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Solution

The fourth proportional to 2,115.28, 2,918.88 and 1,183.84 is: 1,633.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.28 : 2,918.88 = 1,183.84 : x
  2. Step 2: Convert to fraction form
    2,115.28/2,918.88 = 1,183.84/x
  3. Step 3: Cross multiply
    2,115.28x = 2,918.88 × 1,183.84
  4. Step 4: Simplify right side
    2,115.28x = 3,455,486.90
  5. Step 5: Solve for x
    x = 3,455,486.90/2,115.28
  6. Step 6: Final answer
    x = 1,633.58

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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.