Home / 4,086.76-5,639.72-2,223.76

Finding the Fourth Proportional to 4,086.76, 5,639.72 and 2,223.76

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Solution

The fourth proportional to 4,086.76, 5,639.72 and 2,223.76 is: 3,068.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,086.76 : 5,639.72 = 2,223.76 : x
  2. Step 2: Convert to fraction form
    4,086.76/5,639.72 = 2,223.76/x
  3. Step 3: Cross multiply
    4,086.76x = 5,639.72 × 2,223.76
  4. Step 4: Simplify right side
    4,086.76x = 12,541,383.75
  5. Step 5: Solve for x
    x = 12,541,383.75/4,086.76
  6. Step 6: Final answer
    x = 3,068.78

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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.