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Finding the Fourth Proportional to 2,408.28, 3,612.40 and 676.84

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Solution

The fourth proportional to 2,408.28, 3,612.40 and 676.84 is: 1,015.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,408.28 : 3,612.40 = 676.84 : x
  2. Step 2: Convert to fraction form
    2,408.28/3,612.40 = 676.84/x
  3. Step 3: Cross multiply
    2,408.28x = 3,612.40 × 676.84
  4. Step 4: Simplify right side
    2,408.28x = 2,445,016.82
  5. Step 5: Solve for x
    x = 2,445,016.82/2,408.28
  6. Step 6: Final answer
    x = 1,015.25

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1.5x scale

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.