Home / 2,928.76-4,393.72-1,079.90

Finding the Fourth Proportional to 2,928.76, 4,393.72 and 1,079.90

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Solution

The fourth proportional to 2,928.76, 4,393.72 and 1,079.90 is: 1,620.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,928.76 : 4,393.72 = 1,079.90 : x
  2. Step 2: Convert to fraction form
    2,928.76/4,393.72 = 1,079.90/x
  3. Step 3: Cross multiply
    2,928.76x = 4,393.72 × 1,079.90
  4. Step 4: Simplify right side
    2,928.76x = 4,744,778.23
  5. Step 5: Solve for x
    x = 4,744,778.23/2,928.76
  6. Step 6: Final answer
    x = 1,620.06

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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.