Home / 2,930.57-4,393.80-1,081.45

Finding the Fourth Proportional to 2,930.57, 4,393.80 and 1,081.45

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Solution

The fourth proportional to 2,930.57, 4,393.80 and 1,081.45 is: 1,621.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,930.57 : 4,393.80 = 1,081.45 : x
  2. Step 2: Convert to fraction form
    2,930.57/4,393.80 = 1,081.45/x
  3. Step 3: Cross multiply
    2,930.57x = 4,393.80 × 1,081.45
  4. Step 4: Simplify right side
    2,930.57x = 4,751,675.01
  5. Step 5: Solve for x
    x = 4,751,675.01/2,930.57
  6. Step 6: Final answer
    x = 1,621.42

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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.