Home / 3,917.92-5,407-2,589.32

Finding the Fourth Proportional to 3,917.92, 5,407 and 2,589.32

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Solution

The fourth proportional to 3,917.92, 5,407 and 2,589.32 is: 3,573.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.92 : 5,407 = 2,589.32 : x
  2. Step 2: Convert to fraction form
    3,917.92/5,407 = 2,589.32/x
  3. Step 3: Cross multiply
    3,917.92x = 5,407 × 2,589.32
  4. Step 4: Simplify right side
    3,917.92x = 14,000,453.24
  5. Step 5: Solve for x
    x = 14,000,453.24/3,917.92
  6. Step 6: Final answer
    x = 3,573.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.