Home / 5,101.72-7,652.34-2,139.39

Finding the Fourth Proportional to 5,101.72, 7,652.34 and 2,139.39

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Solution

The fourth proportional to 5,101.72, 7,652.34 and 2,139.39 is: 3,208.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,101.72 : 7,652.34 = 2,139.39 : x
  2. Step 2: Convert to fraction form
    5,101.72/7,652.34 = 2,139.39/x
  3. Step 3: Cross multiply
    5,101.72x = 7,652.34 × 2,139.39
  4. Step 4: Simplify right side
    5,101.72x = 16,371,339.67
  5. Step 5: Solve for x
    x = 16,371,339.67/5,101.72
  6. Step 6: Final answer
    x = 3,208.99

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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.