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Finding the Fourth Proportional to 1,610.97, 2,412.59 and 878.73

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Solution

The fourth proportional to 1,610.97, 2,412.59 and 878.73 is: 1,315.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,610.97 : 2,412.59 = 878.73 : x
  2. Step 2: Convert to fraction form
    1,610.97/2,412.59 = 878.73/x
  3. Step 3: Cross multiply
    1,610.97x = 2,412.59 × 878.73
  4. Step 4: Simplify right side
    1,610.97x = 2,120,010.82
  5. Step 5: Solve for x
    x = 2,120,010.82/1,610.97
  6. Step 6: Final answer
    x = 1,315.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.