Home / 2,676.08-4,014.78-921.11

Finding the Fourth Proportional to 2,676.08, 4,014.78 and 921.11

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Solution

The fourth proportional to 2,676.08, 4,014.78 and 921.11 is: 1,381.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,676.08 : 4,014.78 = 921.11 : x
  2. Step 2: Convert to fraction form
    2,676.08/4,014.78 = 921.11/x
  3. Step 3: Cross multiply
    2,676.08x = 4,014.78 × 921.11
  4. Step 4: Simplify right side
    2,676.08x = 3,698,049.40
  5. Step 5: Solve for x
    x = 3,698,049.40/2,676.08
  6. Step 6: Final answer
    x = 1,381.89

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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.