Home / 2,929.20-4,393.84-1,079.60

Finding the Fourth Proportional to 2,929.20, 4,393.84 and 1,079.60

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Solution

The fourth proportional to 2,929.20, 4,393.84 and 1,079.60 is: 1,619.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,929.20 : 4,393.84 = 1,079.60 : x
  2. Step 2: Convert to fraction form
    2,929.20/4,393.84 = 1,079.60/x
  3. Step 3: Cross multiply
    2,929.20x = 4,393.84 × 1,079.60
  4. Step 4: Simplify right side
    2,929.20x = 4,743,589.66
  5. Step 5: Solve for x
    x = 4,743,589.66/2,929.20
  6. Step 6: Final answer
    x = 1,619.41

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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.