Home / 2,928.12-4,393.91-1,080.53

Finding the Fourth Proportional to 2,928.12, 4,393.91 and 1,080.53

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Solution

The fourth proportional to 2,928.12, 4,393.91 and 1,080.53 is: 1,621.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,928.12 : 4,393.91 = 1,080.53 : x
  2. Step 2: Convert to fraction form
    2,928.12/4,393.91 = 1,080.53/x
  3. Step 3: Cross multiply
    2,928.12x = 4,393.91 × 1,080.53
  4. Step 4: Simplify right side
    2,928.12x = 4,747,751.57
  5. Step 5: Solve for x
    x = 4,747,751.57/2,928.12
  6. Step 6: Final answer
    x = 1,621.43

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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.