Home / 7,679.16-11,520.36-2,748.60

Finding the Fourth Proportional to 7,679.16, 11,520.36 and 2,748.60

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Solution

The fourth proportional to 7,679.16, 11,520.36 and 2,748.60 is: 4,123.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,679.16 : 11,520.36 = 2,748.60 : x
  2. Step 2: Convert to fraction form
    7,679.16/11,520.36 = 2,748.60/x
  3. Step 3: Cross multiply
    7,679.16x = 11,520.36 × 2,748.60
  4. Step 4: Simplify right side
    7,679.16x = 31,664,861.50
  5. Step 5: Solve for x
    x = 31,664,861.50/7,679.16
  6. Step 6: Final answer
    x = 4,123.48

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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.