Home / 5,459.78-8,189.67-1,355.78

Finding the Fourth Proportional to 5,459.78, 8,189.67 and 1,355.78

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Solution

The fourth proportional to 5,459.78, 8,189.67 and 1,355.78 is: 2,033.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,459.78 : 8,189.67 = 1,355.78 : x
  2. Step 2: Convert to fraction form
    5,459.78/8,189.67 = 1,355.78/x
  3. Step 3: Cross multiply
    5,459.78x = 8,189.67 × 1,355.78
  4. Step 4: Simplify right side
    5,459.78x = 11,103,390.79
  5. Step 5: Solve for x
    x = 11,103,390.79/5,459.78
  6. Step 6: Final answer
    x = 2,033.67

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1.5x scale

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.