Home / 1,429.10-2,144.10-698.75

Finding the Fourth Proportional to 1,429.10, 2,144.10 and 698.75

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Solution

The fourth proportional to 1,429.10, 2,144.10 and 698.75 is: 1,048.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429.10 : 2,144.10 = 698.75 : x
  2. Step 2: Convert to fraction form
    1,429.10/2,144.10 = 698.75/x
  3. Step 3: Cross multiply
    1,429.10x = 2,144.10 × 698.75
  4. Step 4: Simplify right side
    1,429.10x = 1,498,189.88
  5. Step 5: Solve for x
    x = 1,498,189.88/1,429.10
  6. Step 6: Final answer
    x = 1,048.35

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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.