Home / 1,308.31-1,804.92-1,108.29

Finding the Fourth Proportional to 1,308.31, 1,804.92 and 1,108.29

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Solution

The fourth proportional to 1,308.31, 1,804.92 and 1,108.29 is: 1,528.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.31 : 1,804.92 = 1,108.29 : x
  2. Step 2: Convert to fraction form
    1,308.31/1,804.92 = 1,108.29/x
  3. Step 3: Cross multiply
    1,308.31x = 1,804.92 × 1,108.29
  4. Step 4: Simplify right side
    1,308.31x = 2,000,377.40
  5. Step 5: Solve for x
    x = 2,000,377.40/1,308.31
  6. Step 6: Final answer
    x = 1,528.97

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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.