Home / 3,679.73-5,078.12-2,188.45

Finding the Fourth Proportional to 3,679.73, 5,078.12 and 2,188.45

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Solution

The fourth proportional to 3,679.73, 5,078.12 and 2,188.45 is: 3,020.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.73 : 5,078.12 = 2,188.45 : x
  2. Step 2: Convert to fraction form
    3,679.73/5,078.12 = 2,188.45/x
  3. Step 3: Cross multiply
    3,679.73x = 5,078.12 × 2,188.45
  4. Step 4: Simplify right side
    3,679.73x = 11,113,211.71
  5. Step 5: Solve for x
    x = 11,113,211.71/3,679.73
  6. Step 6: Final answer
    x = 3,020.12

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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.