Home / 4,919.15-7,379.64-1,999.51

Finding the Fourth Proportional to 4,919.15, 7,379.64 and 1,999.51

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Solution

The fourth proportional to 4,919.15, 7,379.64 and 1,999.51 is: 2,999.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,919.15 : 7,379.64 = 1,999.51 : x
  2. Step 2: Convert to fraction form
    4,919.15/7,379.64 = 1,999.51/x
  3. Step 3: Cross multiply
    4,919.15x = 7,379.64 × 1,999.51
  4. Step 4: Simplify right side
    4,919.15x = 14,755,645.53
  5. Step 5: Solve for x
    x = 14,755,645.53/4,919.15
  6. Step 6: Final answer
    x = 2,999.63

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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.