Home / 1,400.23-2,100.36-426.33

Finding the Fourth Proportional to 1,400.23, 2,100.36 and 426.33

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Solution

The fourth proportional to 1,400.23, 2,100.36 and 426.33 is: 639.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400.23 : 2,100.36 = 426.33 : x
  2. Step 2: Convert to fraction form
    1,400.23/2,100.36 = 426.33/x
  3. Step 3: Cross multiply
    1,400.23x = 2,100.36 × 426.33
  4. Step 4: Simplify right side
    1,400.23x = 895,446.48
  5. Step 5: Solve for x
    x = 895,446.48/1,400.23
  6. Step 6: Final answer
    x = 639.50

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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.