Home / 1,079.26-1,619.10-385.98

Finding the Fourth Proportional to 1,079.26, 1,619.10 and 385.98

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Solution

The fourth proportional to 1,079.26, 1,619.10 and 385.98 is: 579.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079.26 : 1,619.10 = 385.98 : x
  2. Step 2: Convert to fraction form
    1,079.26/1,619.10 = 385.98/x
  3. Step 3: Cross multiply
    1,079.26x = 1,619.10 × 385.98
  4. Step 4: Simplify right side
    1,079.26x = 624,940.22
  5. Step 5: Solve for x
    x = 624,940.22/1,079.26
  6. Step 6: Final answer
    x = 579.05

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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.