Home / 2,899.24-3,997.92-1,720.08

Finding the Fourth Proportional to 2,899.24, 3,997.92 and 1,720.08

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Solution

The fourth proportional to 2,899.24, 3,997.92 and 1,720.08 is: 2,371.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,899.24 : 3,997.92 = 1,720.08 : x
  2. Step 2: Convert to fraction form
    2,899.24/3,997.92 = 1,720.08/x
  3. Step 3: Cross multiply
    2,899.24x = 3,997.92 × 1,720.08
  4. Step 4: Simplify right side
    2,899.24x = 6,876,733.63
  5. Step 5: Solve for x
    x = 6,876,733.63/2,899.24
  6. Step 6: Final answer
    x = 2,371.91

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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.