Home / 5,628.46-7,768.78-3,238.70

Finding the Fourth Proportional to 5,628.46, 7,768.78 and 3,238.70

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Solution

The fourth proportional to 5,628.46, 7,768.78 and 3,238.70 is: 4,470.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,628.46 : 7,768.78 = 3,238.70 : x
  2. Step 2: Convert to fraction form
    5,628.46/7,768.78 = 3,238.70/x
  3. Step 3: Cross multiply
    5,628.46x = 7,768.78 × 3,238.70
  4. Step 4: Simplify right side
    5,628.46x = 25,160,747.79
  5. Step 5: Solve for x
    x = 25,160,747.79/5,628.46
  6. Step 6: Final answer
    x = 4,470.27

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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.