Home / 1,406.29-2,109.44-635.89

Finding the Fourth Proportional to 1,406.29, 2,109.44 and 635.89

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Solution

The fourth proportional to 1,406.29, 2,109.44 and 635.89 is: 953.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,406.29 : 2,109.44 = 635.89 : x
  2. Step 2: Convert to fraction form
    1,406.29/2,109.44 = 635.89/x
  3. Step 3: Cross multiply
    1,406.29x = 2,109.44 × 635.89
  4. Step 4: Simplify right side
    1,406.29x = 1,341,371.80
  5. Step 5: Solve for x
    x = 1,341,371.80/1,406.29
  6. Step 6: Final answer
    x = 953.84

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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.