Home / 1,930.66-2,660.25-1,308.58

Finding the Fourth Proportional to 1,930.66, 2,660.25 and 1,308.58

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Solution

The fourth proportional to 1,930.66, 2,660.25 and 1,308.58 is: 1,803.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,930.66 : 2,660.25 = 1,308.58 : x
  2. Step 2: Convert to fraction form
    1,930.66/2,660.25 = 1,308.58/x
  3. Step 3: Cross multiply
    1,930.66x = 2,660.25 × 1,308.58
  4. Step 4: Simplify right side
    1,930.66x = 3,481,149.95
  5. Step 5: Solve for x
    x = 3,481,149.95/1,930.66
  6. Step 6: Final answer
    x = 1,803.09

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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.