Home / 9,129.96-13,688.76-3,579.84

Finding the Fourth Proportional to 9,129.96, 13,688.76 and 3,579.84

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Solution

The fourth proportional to 9,129.96, 13,688.76 and 3,579.84 is: 5,367.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,129.96 : 13,688.76 = 3,579.84 : x
  2. Step 2: Convert to fraction form
    9,129.96/13,688.76 = 3,579.84/x
  3. Step 3: Cross multiply
    9,129.96x = 13,688.76 × 3,579.84
  4. Step 4: Simplify right side
    9,129.96x = 49,003,570.60
  5. Step 5: Solve for x
    x = 49,003,570.60/9,129.96
  6. Step 6: Final answer
    x = 5,367.34

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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.