Home / 7,426.56-11,139.84-1,879.90

Finding the Fourth Proportional to 7,426.56, 11,139.84 and 1,879.90

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Solution

The fourth proportional to 7,426.56, 11,139.84 and 1,879.90 is: 2,819.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,426.56 : 11,139.84 = 1,879.90 : x
  2. Step 2: Convert to fraction form
    7,426.56/11,139.84 = 1,879.90/x
  3. Step 3: Cross multiply
    7,426.56x = 11,139.84 × 1,879.90
  4. Step 4: Simplify right side
    7,426.56x = 20,941,785.22
  5. Step 5: Solve for x
    x = 20,941,785.22/7,426.56
  6. Step 6: Final answer
    x = 2,819.85

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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.