Home / 7,405.38-11,109.69-3,243.60

Finding the Fourth Proportional to 7,405.38, 11,109.69 and 3,243.60

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Solution

The fourth proportional to 7,405.38, 11,109.69 and 3,243.60 is: 4,866.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,405.38 : 11,109.69 = 3,243.60 : x
  2. Step 2: Convert to fraction form
    7,405.38/11,109.69 = 3,243.60/x
  3. Step 3: Cross multiply
    7,405.38x = 11,109.69 × 3,243.60
  4. Step 4: Simplify right side
    7,405.38x = 36,035,390.48
  5. Step 5: Solve for x
    x = 36,035,390.48/7,405.38
  6. Step 6: Final answer
    x = 4,866.11

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1.5x scale

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.