Home / 3,738.56-5,159.70-2,166.75

Finding the Fourth Proportional to 3,738.56, 5,159.70 and 2,166.75

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Solution

The fourth proportional to 3,738.56, 5,159.70 and 2,166.75 is: 2,990.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,738.56 : 5,159.70 = 2,166.75 : x
  2. Step 2: Convert to fraction form
    3,738.56/5,159.70 = 2,166.75/x
  3. Step 3: Cross multiply
    3,738.56x = 5,159.70 × 2,166.75
  4. Step 4: Simplify right side
    3,738.56x = 11,179,779.98
  5. Step 5: Solve for x
    x = 11,179,779.98/3,738.56
  6. Step 6: Final answer
    x = 2,990.40

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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.