Home / 5,115.34-7,669.60-4,129.37

Finding the Fourth Proportional to 5,115.34, 7,669.60 and 4,129.37

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Solution

The fourth proportional to 5,115.34, 7,669.60 and 4,129.37 is: 6,191.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.34 : 7,669.60 = 4,129.37 : x
  2. Step 2: Convert to fraction form
    5,115.34/7,669.60 = 4,129.37/x
  3. Step 3: Cross multiply
    5,115.34x = 7,669.60 × 4,129.37
  4. Step 4: Simplify right side
    5,115.34x = 31,670,595.51
  5. Step 5: Solve for x
    x = 31,670,595.51/5,115.34
  6. Step 6: Final answer
    x = 6,191.30

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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.