Home / 7,409.90-11,109.60-3,709.47

Finding the Fourth Proportional to 7,409.90, 11,109.60 and 3,709.47

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Solution

The fourth proportional to 7,409.90, 11,109.60 and 3,709.47 is: 5,561.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,409.90 : 11,109.60 = 3,709.47 : x
  2. Step 2: Convert to fraction form
    7,409.90/11,109.60 = 3,709.47/x
  3. Step 3: Cross multiply
    7,409.90x = 11,109.60 × 3,709.47
  4. Step 4: Simplify right side
    7,409.90x = 41,210,727.91
  5. Step 5: Solve for x
    x = 41,210,727.91/7,409.90
  6. Step 6: Final answer
    x = 5,561.58

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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.