Home / 5,118.08-7,676.66-1,420.02

Finding the Fourth Proportional to 5,118.08, 7,676.66 and 1,420.02

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Solution

The fourth proportional to 5,118.08, 7,676.66 and 1,420.02 is: 2,129.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.08 : 7,676.66 = 1,420.02 : x
  2. Step 2: Convert to fraction form
    5,118.08/7,676.66 = 1,420.02/x
  3. Step 3: Cross multiply
    5,118.08x = 7,676.66 × 1,420.02
  4. Step 4: Simplify right side
    5,118.08x = 10,901,010.73
  5. Step 5: Solve for x
    x = 10,901,010.73/5,118.08
  6. Step 6: Final answer
    x = 2,129.90

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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.