Home / 7,426.07-11,138.75-1,879.09

Finding the Fourth Proportional to 7,426.07, 11,138.75 and 1,879.09

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Solution

The fourth proportional to 7,426.07, 11,138.75 and 1,879.09 is: 2,818.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,426.07 : 11,138.75 = 1,879.09 : x
  2. Step 2: Convert to fraction form
    7,426.07/11,138.75 = 1,879.09/x
  3. Step 3: Cross multiply
    7,426.07x = 11,138.75 × 1,879.09
  4. Step 4: Simplify right side
    7,426.07x = 20,930,713.74
  5. Step 5: Solve for x
    x = 20,930,713.74/7,426.07
  6. Step 6: Final answer
    x = 2,818.55

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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.