Home / 1,429.40-2,144.38-698.98

Finding the Fourth Proportional to 1,429.40, 2,144.38 and 698.98

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Solution

The fourth proportional to 1,429.40, 2,144.38 and 698.98 is: 1,048.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429.40 : 2,144.38 = 698.98 : x
  2. Step 2: Convert to fraction form
    1,429.40/2,144.38 = 698.98/x
  3. Step 3: Cross multiply
    1,429.40x = 2,144.38 × 698.98
  4. Step 4: Simplify right side
    1,429.40x = 1,498,878.73
  5. Step 5: Solve for x
    x = 1,498,878.73/1,429.40
  6. Step 6: Final answer
    x = 1,048.61

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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.