Home / 3,678.76-5,074.96-2,186.72

Finding the Fourth Proportional to 3,678.76, 5,074.96 and 2,186.72

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Solution

The fourth proportional to 3,678.76, 5,074.96 and 2,186.72 is: 3,016.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.76 : 5,074.96 = 2,186.72 : x
  2. Step 2: Convert to fraction form
    3,678.76/5,074.96 = 2,186.72/x
  3. Step 3: Cross multiply
    3,678.76x = 5,074.96 × 2,186.72
  4. Step 4: Simplify right side
    3,678.76x = 11,097,516.53
  5. Step 5: Solve for x
    x = 11,097,516.53/3,678.76
  6. Step 6: Final answer
    x = 3,016.65

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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.