Home / 3,678.73-5,076.74-2,187.45

Finding the Fourth Proportional to 3,678.73, 5,076.74 and 2,187.45

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Solution

The fourth proportional to 3,678.73, 5,076.74 and 2,187.45 is: 3,018.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.73 : 5,076.74 = 2,187.45 : x
  2. Step 2: Convert to fraction form
    3,678.73/5,076.74 = 2,187.45/x
  3. Step 3: Cross multiply
    3,678.73x = 5,076.74 × 2,187.45
  4. Step 4: Simplify right side
    3,678.73x = 11,105,120.38
  5. Step 5: Solve for x
    x = 11,105,120.38/3,678.73
  6. Step 6: Final answer
    x = 3,018.74

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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.