Home / 1,408.05-2,110.47-626.88

Finding the Fourth Proportional to 1,408.05, 2,110.47 and 626.88

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Solution

The fourth proportional to 1,408.05, 2,110.47 and 626.88 is: 939.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,408.05 : 2,110.47 = 626.88 : x
  2. Step 2: Convert to fraction form
    1,408.05/2,110.47 = 626.88/x
  3. Step 3: Cross multiply
    1,408.05x = 2,110.47 × 626.88
  4. Step 4: Simplify right side
    1,408.05x = 1,323,011.43
  5. Step 5: Solve for x
    x = 1,323,011.43/1,408.05
  6. Step 6: Final answer
    x = 939.61

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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.