Home / 2,930.70-4,396.10-1,080.86

Finding the Fourth Proportional to 2,930.70, 4,396.10 and 1,080.86

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Solution

The fourth proportional to 2,930.70, 4,396.10 and 1,080.86 is: 1,621.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,930.70 : 4,396.10 = 1,080.86 : x
  2. Step 2: Convert to fraction form
    2,930.70/4,396.10 = 1,080.86/x
  3. Step 3: Cross multiply
    2,930.70x = 4,396.10 × 1,080.86
  4. Step 4: Simplify right side
    2,930.70x = 4,751,541.26
  5. Step 5: Solve for x
    x = 4,751,541.26/2,930.70
  6. Step 6: Final answer
    x = 1,621.30

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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.