Home / 5,121.84-7,676.52-2,655.30

Finding the Fourth Proportional to 5,121.84, 7,676.52 and 2,655.30

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Solution

The fourth proportional to 5,121.84, 7,676.52 and 2,655.30 is: 3,979.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.84 : 7,676.52 = 2,655.30 : x
  2. Step 2: Convert to fraction form
    5,121.84/7,676.52 = 2,655.30/x
  3. Step 3: Cross multiply
    5,121.84x = 7,676.52 × 2,655.30
  4. Step 4: Simplify right side
    5,121.84x = 20,383,463.56
  5. Step 5: Solve for x
    x = 20,383,463.56/5,121.84
  6. Step 6: Final answer
    x = 3,979.72

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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.