Home / 2,912.91-4,017.76-2,816.48

Finding the Fourth Proportional to 2,912.91, 4,017.76 and 2,816.48

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Solution

The fourth proportional to 2,912.91, 4,017.76 and 2,816.48 is: 3,884.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.91 : 4,017.76 = 2,816.48 : x
  2. Step 2: Convert to fraction form
    2,912.91/4,017.76 = 2,816.48/x
  3. Step 3: Cross multiply
    2,912.91x = 4,017.76 × 2,816.48
  4. Step 4: Simplify right side
    2,912.91x = 11,315,906.51
  5. Step 5: Solve for x
    x = 11,315,906.51/2,912.91
  6. Step 6: Final answer
    x = 3,884.74

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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.