Home / 10,405.38-15,608.06-3,109.38

Finding the Fourth Proportional to 10,405.38, 15,608.06 and 3,109.38

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Solution

The fourth proportional to 10,405.38, 15,608.06 and 3,109.38 is: 4,664.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,405.38 : 15,608.06 = 3,109.38 : x
  2. Step 2: Convert to fraction form
    10,405.38/15,608.06 = 3,109.38/x
  3. Step 3: Cross multiply
    10,405.38x = 15,608.06 × 3,109.38
  4. Step 4: Simplify right side
    10,405.38x = 48,531,389.60
  5. Step 5: Solve for x
    x = 48,531,389.60/10,405.38
  6. Step 6: Final answer
    x = 4,664.07

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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.