Home / 2,868.12-4,301.24-919.85

Finding the Fourth Proportional to 2,868.12, 4,301.24 and 919.85

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Solution

The fourth proportional to 2,868.12, 4,301.24 and 919.85 is: 1,379.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,868.12 : 4,301.24 = 919.85 : x
  2. Step 2: Convert to fraction form
    2,868.12/4,301.24 = 919.85/x
  3. Step 3: Cross multiply
    2,868.12x = 4,301.24 × 919.85
  4. Step 4: Simplify right side
    2,868.12x = 3,956,469.51
  5. Step 5: Solve for x
    x = 3,956,469.51/2,868.12
  6. Step 6: Final answer
    x = 1,379.46

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Similar ratio
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1.5x scale

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.