Home / 6,919.75-10,379.63-2,815.75

Finding the Fourth Proportional to 6,919.75, 10,379.63 and 2,815.75

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Solution

The fourth proportional to 6,919.75, 10,379.63 and 2,815.75 is: 4,223.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,919.75 : 10,379.63 = 2,815.75 : x
  2. Step 2: Convert to fraction form
    6,919.75/10,379.63 = 2,815.75/x
  3. Step 3: Cross multiply
    6,919.75x = 10,379.63 × 2,815.75
  4. Step 4: Simplify right side
    6,919.75x = 29,226,443.17
  5. Step 5: Solve for x
    x = 29,226,443.17/6,919.75
  6. Step 6: Final answer
    x = 4,223.63

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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.