Home / 5,215.80-7,826.16-2,620.56

Finding the Fourth Proportional to 5,215.80, 7,826.16 and 2,620.56

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Solution

The fourth proportional to 5,215.80, 7,826.16 and 2,620.56 is: 3,932.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.80 : 7,826.16 = 2,620.56 : x
  2. Step 2: Convert to fraction form
    5,215.80/7,826.16 = 2,620.56/x
  3. Step 3: Cross multiply
    5,215.80x = 7,826.16 × 2,620.56
  4. Step 4: Simplify right side
    5,215.80x = 20,508,921.85
  5. Step 5: Solve for x
    x = 20,508,921.85/5,215.80
  6. Step 6: Final answer
    x = 3,932.08

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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.