Home / 5,146.89-7,720.28-1,251.30

Finding the Fourth Proportional to 5,146.89, 7,720.28 and 1,251.30

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Solution

The fourth proportional to 5,146.89, 7,720.28 and 1,251.30 is: 1,876.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,146.89 : 7,720.28 = 1,251.30 : x
  2. Step 2: Convert to fraction form
    5,146.89/7,720.28 = 1,251.30/x
  3. Step 3: Cross multiply
    5,146.89x = 7,720.28 × 1,251.30
  4. Step 4: Simplify right side
    5,146.89x = 9,660,408.79
  5. Step 5: Solve for x
    x = 9,660,408.79/5,146.89
  6. Step 6: Final answer
    x = 1,876.94

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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.