Home / 2,930.15-4,392.57-1,080

Finding the Fourth Proportional to 2,930.15, 4,392.57 and 1,080

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Solution

The fourth proportional to 2,930.15, 4,392.57 and 1,080 is: 1,619.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,930.15 : 4,392.57 = 1,080 : x
  2. Step 2: Convert to fraction form
    2,930.15/4,392.57 = 1,080/x
  3. Step 3: Cross multiply
    2,930.15x = 4,392.57 × 1,080
  4. Step 4: Simplify right side
    2,930.15x = 4,743,975.60
  5. Step 5: Solve for x
    x = 4,743,975.60/2,930.15
  6. Step 6: Final answer
    x = 1,619.02

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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.