Home / 2,128.44-2,928.58-2,079.32

Finding the Fourth Proportional to 2,128.44, 2,928.58 and 2,079.32

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Solution

The fourth proportional to 2,128.44, 2,928.58 and 2,079.32 is: 2,860.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.44 : 2,928.58 = 2,079.32 : x
  2. Step 2: Convert to fraction form
    2,128.44/2,928.58 = 2,079.32/x
  3. Step 3: Cross multiply
    2,128.44x = 2,928.58 × 2,079.32
  4. Step 4: Simplify right side
    2,128.44x = 6,089,454.97
  5. Step 5: Solve for x
    x = 6,089,454.97/2,128.44
  6. Step 6: Final answer
    x = 2,860.99

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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.