Home / 6,221.23-8,579.18-5,279.60

Finding the Fourth Proportional to 6,221.23, 8,579.18 and 5,279.60

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Solution

The fourth proportional to 6,221.23, 8,579.18 and 5,279.60 is: 7,280.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,221.23 : 8,579.18 = 5,279.60 : x
  2. Step 2: Convert to fraction form
    6,221.23/8,579.18 = 5,279.60/x
  3. Step 3: Cross multiply
    6,221.23x = 8,579.18 × 5,279.60
  4. Step 4: Simplify right side
    6,221.23x = 45,294,673.37
  5. Step 5: Solve for x
    x = 45,294,673.37/6,221.23
  6. Step 6: Final answer
    x = 7,280.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.