Home / 5,212.74-7,190.67-3,086.20

Finding the Fourth Proportional to 5,212.74, 7,190.67 and 3,086.20

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Solution

The fourth proportional to 5,212.74, 7,190.67 and 3,086.20 is: 4,257.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,212.74 : 7,190.67 = 3,086.20 : x
  2. Step 2: Convert to fraction form
    5,212.74/7,190.67 = 3,086.20/x
  3. Step 3: Cross multiply
    5,212.74x = 7,190.67 × 3,086.20
  4. Step 4: Simplify right side
    5,212.74x = 22,191,848.96
  5. Step 5: Solve for x
    x = 22,191,848.96/5,212.74
  6. Step 6: Final answer
    x = 4,257.23

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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.