Home / 4,111.28-6,170.64-1,921.28

Finding the Fourth Proportional to 4,111.28, 6,170.64 and 1,921.28

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Solution

The fourth proportional to 4,111.28, 6,170.64 and 1,921.28 is: 2,883.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,111.28 : 6,170.64 = 1,921.28 : x
  2. Step 2: Convert to fraction form
    4,111.28/6,170.64 = 1,921.28/x
  3. Step 3: Cross multiply
    4,111.28x = 6,170.64 × 1,921.28
  4. Step 4: Simplify right side
    4,111.28x = 11,855,527.22
  5. Step 5: Solve for x
    x = 11,855,527.22/4,111.28
  6. Step 6: Final answer
    x = 2,883.66

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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.