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Finding the Fourth Proportional to 1,958.78, 2,703.11 and 1,074.58

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Solution

The fourth proportional to 1,958.78, 2,703.11 and 1,074.58 is: 1,482.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,958.78 : 2,703.11 = 1,074.58 : x
  2. Step 2: Convert to fraction form
    1,958.78/2,703.11 = 1,074.58/x
  3. Step 3: Cross multiply
    1,958.78x = 2,703.11 × 1,074.58
  4. Step 4: Simplify right side
    1,958.78x = 2,904,707.94
  5. Step 5: Solve for x
    x = 2,904,707.94/1,958.78
  6. Step 6: Final answer
    x = 1,482.92

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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.