Home / 1,354.12-1,872.62-1,329.51

Finding the Fourth Proportional to 1,354.12, 1,872.62 and 1,329.51

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Solution

The fourth proportional to 1,354.12, 1,872.62 and 1,329.51 is: 1,838.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,354.12 : 1,872.62 = 1,329.51 : x
  2. Step 2: Convert to fraction form
    1,354.12/1,872.62 = 1,329.51/x
  3. Step 3: Cross multiply
    1,354.12x = 1,872.62 × 1,329.51
  4. Step 4: Simplify right side
    1,354.12x = 2,489,672.38
  5. Step 5: Solve for x
    x = 2,489,672.38/1,354.12
  6. Step 6: Final answer
    x = 1,838.59

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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.