Home / 5,459.81-8,189.72-1,355.81

Finding the Fourth Proportional to 5,459.81, 8,189.72 and 1,355.81

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Solution

The fourth proportional to 5,459.81, 8,189.72 and 1,355.81 is: 2,033.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,459.81 : 8,189.72 = 1,355.81 : x
  2. Step 2: Convert to fraction form
    5,459.81/8,189.72 = 1,355.81/x
  3. Step 3: Cross multiply
    5,459.81x = 8,189.72 × 1,355.81
  4. Step 4: Simplify right side
    5,459.81x = 11,103,723.05
  5. Step 5: Solve for x
    x = 11,103,723.05/5,459.81
  6. Step 6: Final answer
    x = 2,033.72

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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.