Home / 7,419.07-11,128.64-2,489.09

Finding the Fourth Proportional to 7,419.07, 11,128.64 and 2,489.09

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Solution

The fourth proportional to 7,419.07, 11,128.64 and 2,489.09 is: 3,733.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,419.07 : 11,128.64 = 2,489.09 : x
  2. Step 2: Convert to fraction form
    7,419.07/11,128.64 = 2,489.09/x
  3. Step 3: Cross multiply
    7,419.07x = 11,128.64 × 2,489.09
  4. Step 4: Simplify right side
    7,419.07x = 27,700,186.54
  5. Step 5: Solve for x
    x = 27,700,186.54/7,419.07
  6. Step 6: Final answer
    x = 3,733.65

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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.