Home / 7,815.77-11,723.78-2,550.76

Finding the Fourth Proportional to 7,815.77, 11,723.78 and 2,550.76

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Solution

The fourth proportional to 7,815.77, 11,723.78 and 2,550.76 is: 3,826.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.77 : 11,723.78 = 2,550.76 : x
  2. Step 2: Convert to fraction form
    7,815.77/11,723.78 = 2,550.76/x
  3. Step 3: Cross multiply
    7,815.77x = 11,723.78 × 2,550.76
  4. Step 4: Simplify right side
    7,815.77x = 29,904,549.07
  5. Step 5: Solve for x
    x = 29,904,549.07/7,815.77
  6. Step 6: Final answer
    x = 3,826.18

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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.