Home / 2,630.80-3,630.31-1,511.79

Finding the Fourth Proportional to 2,630.80, 3,630.31 and 1,511.79

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Solution

The fourth proportional to 2,630.80, 3,630.31 and 1,511.79 is: 2,086.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,630.80 : 3,630.31 = 1,511.79 : x
  2. Step 2: Convert to fraction form
    2,630.80/3,630.31 = 1,511.79/x
  3. Step 3: Cross multiply
    2,630.80x = 3,630.31 × 1,511.79
  4. Step 4: Simplify right side
    2,630.80x = 5,488,266.35
  5. Step 5: Solve for x
    x = 5,488,266.35/2,630.80
  6. Step 6: Final answer
    x = 2,086.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.