Home / 5,347.20-8,031.60-5,163.60

Finding the Fourth Proportional to 5,347.20, 8,031.60 and 5,163.60

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Solution

The fourth proportional to 5,347.20, 8,031.60 and 5,163.60 is: 7,755.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,347.20 : 8,031.60 = 5,163.60 : x
  2. Step 2: Convert to fraction form
    5,347.20/8,031.60 = 5,163.60/x
  3. Step 3: Cross multiply
    5,347.20x = 8,031.60 × 5,163.60
  4. Step 4: Simplify right side
    5,347.20x = 41,471,969.76
  5. Step 5: Solve for x
    x = 41,471,969.76/5,347.20
  6. Step 6: Final answer
    x = 7,755.83

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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.