Home / 2,896.84-3,997.63-1,638.30

Finding the Fourth Proportional to 2,896.84, 3,997.63 and 1,638.30

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Solution

The fourth proportional to 2,896.84, 3,997.63 and 1,638.30 is: 2,260.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,896.84 : 3,997.63 = 1,638.30 : x
  2. Step 2: Convert to fraction form
    2,896.84/3,997.63 = 1,638.30/x
  3. Step 3: Cross multiply
    2,896.84x = 3,997.63 × 1,638.30
  4. Step 4: Simplify right side
    2,896.84x = 6,549,317.23
  5. Step 5: Solve for x
    x = 6,549,317.23/2,896.84
  6. Step 6: Final answer
    x = 2,260.85

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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.