Home / 1,408.05-2,110.32-792.18

Finding the Fourth Proportional to 1,408.05, 2,110.32 and 792.18

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Solution

The fourth proportional to 1,408.05, 2,110.32 and 792.18 is: 1,187.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,408.05 : 2,110.32 = 792.18 : x
  2. Step 2: Convert to fraction form
    1,408.05/2,110.32 = 792.18/x
  3. Step 3: Cross multiply
    1,408.05x = 2,110.32 × 792.18
  4. Step 4: Simplify right side
    1,408.05x = 1,671,753.30
  5. Step 5: Solve for x
    x = 1,671,753.30/1,408.05
  6. Step 6: Final answer
    x = 1,187.28

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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.