Home / 5,618-8,429.45-2,157.68

Finding the Fourth Proportional to 5,618, 8,429.45 and 2,157.68

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Solution

The fourth proportional to 5,618, 8,429.45 and 2,157.68 is: 3,237.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,618 : 8,429.45 = 2,157.68 : x
  2. Step 2: Convert to fraction form
    5,618/8,429.45 = 2,157.68/x
  3. Step 3: Cross multiply
    5,618x = 8,429.45 × 2,157.68
  4. Step 4: Simplify right side
    5,618x = 18,188,055.68
  5. Step 5: Solve for x
    x = 18,188,055.68/5,618
  6. Step 6: Final answer
    x = 3,237.46

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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.