Home / 5,418.54-8,128.96-1,908.41

Finding the Fourth Proportional to 5,418.54, 8,128.96 and 1,908.41

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Solution

The fourth proportional to 5,418.54, 8,128.96 and 1,908.41 is: 2,863.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.54 : 8,128.96 = 1,908.41 : x
  2. Step 2: Convert to fraction form
    5,418.54/8,128.96 = 1,908.41/x
  3. Step 3: Cross multiply
    5,418.54x = 8,128.96 × 1,908.41
  4. Step 4: Simplify right side
    5,418.54x = 15,513,343.14
  5. Step 5: Solve for x
    x = 15,513,343.14/5,418.54
  6. Step 6: Final answer
    x = 2,863.01

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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.