Home / 5,459.67-8,190.72-3,120.66

Finding the Fourth Proportional to 5,459.67, 8,190.72 and 3,120.66

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Solution

The fourth proportional to 5,459.67, 8,190.72 and 3,120.66 is: 4,681.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,459.67 : 8,190.72 = 3,120.66 : x
  2. Step 2: Convert to fraction form
    5,459.67/8,190.72 = 3,120.66/x
  3. Step 3: Cross multiply
    5,459.67x = 8,190.72 × 3,120.66
  4. Step 4: Simplify right side
    5,459.67x = 25,560,452.28
  5. Step 5: Solve for x
    x = 25,560,452.28/5,459.67
  6. Step 6: Final answer
    x = 4,681.68

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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.