Home / 3,680.34-5,078.32-2,188.32

Finding the Fourth Proportional to 3,680.34, 5,078.32 and 2,188.32

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Solution

The fourth proportional to 3,680.34, 5,078.32 and 2,188.32 is: 3,019.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,680.34 : 5,078.32 = 2,188.32 : x
  2. Step 2: Convert to fraction form
    3,680.34/5,078.32 = 2,188.32/x
  3. Step 3: Cross multiply
    3,680.34x = 5,078.32 × 2,188.32
  4. Step 4: Simplify right side
    3,680.34x = 11,112,989.22
  5. Step 5: Solve for x
    x = 11,112,989.22/3,680.34
  6. Step 6: Final answer
    x = 3,019.56

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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.