Home / 5,150.77-7,107.78-2,912.51

Finding the Fourth Proportional to 5,150.77, 7,107.78 and 2,912.51

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Solution

The fourth proportional to 5,150.77, 7,107.78 and 2,912.51 is: 4,019.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,150.77 : 7,107.78 = 2,912.51 : x
  2. Step 2: Convert to fraction form
    5,150.77/7,107.78 = 2,912.51/x
  3. Step 3: Cross multiply
    5,150.77x = 7,107.78 × 2,912.51
  4. Step 4: Simplify right side
    5,150.77x = 20,701,480.33
  5. Step 5: Solve for x
    x = 20,701,480.33/5,150.77
  6. Step 6: Final answer
    x = 4,019.10

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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.