Home / 7,758.82-11,639.31-2,830.78

Finding the Fourth Proportional to 7,758.82, 11,639.31 and 2,830.78

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Solution

The fourth proportional to 7,758.82, 11,639.31 and 2,830.78 is: 4,246.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,758.82 : 11,639.31 = 2,830.78 : x
  2. Step 2: Convert to fraction form
    7,758.82/11,639.31 = 2,830.78/x
  3. Step 3: Cross multiply
    7,758.82x = 11,639.31 × 2,830.78
  4. Step 4: Simplify right side
    7,758.82x = 32,948,325.96
  5. Step 5: Solve for x
    x = 32,948,325.96/7,758.82
  6. Step 6: Final answer
    x = 4,246.56

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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.