Home / 3,101.50-4,640.62-2,178.86

Finding the Fourth Proportional to 3,101.50, 4,640.62 and 2,178.86

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Solution

The fourth proportional to 3,101.50, 4,640.62 and 2,178.86 is: 3,260.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.50 : 4,640.62 = 2,178.86 : x
  2. Step 2: Convert to fraction form
    3,101.50/4,640.62 = 2,178.86/x
  3. Step 3: Cross multiply
    3,101.50x = 4,640.62 × 2,178.86
  4. Step 4: Simplify right side
    3,101.50x = 10,111,261.29
  5. Step 5: Solve for x
    x = 10,111,261.29/3,101.50
  6. Step 6: Final answer
    x = 3,260.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.