Home / 2,116.96-2,921.12-1,185.44

Finding the Fourth Proportional to 2,116.96, 2,921.12 and 1,185.44

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Solution

The fourth proportional to 2,116.96, 2,921.12 and 1,185.44 is: 1,635.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.96 : 2,921.12 = 1,185.44 : x
  2. Step 2: Convert to fraction form
    2,116.96/2,921.12 = 1,185.44/x
  3. Step 3: Cross multiply
    2,116.96x = 2,921.12 × 1,185.44
  4. Step 4: Simplify right side
    2,116.96x = 3,462,812.49
  5. Step 5: Solve for x
    x = 3,462,812.49/2,116.96
  6. Step 6: Final answer
    x = 1,635.75

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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.