Home / 5,147.54-7,720.70-2,186.42

Finding the Fourth Proportional to 5,147.54, 7,720.70 and 2,186.42

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Solution

The fourth proportional to 5,147.54, 7,720.70 and 2,186.42 is: 3,279.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.54 : 7,720.70 = 2,186.42 : x
  2. Step 2: Convert to fraction form
    5,147.54/7,720.70 = 2,186.42/x
  3. Step 3: Cross multiply
    5,147.54x = 7,720.70 × 2,186.42
  4. Step 4: Simplify right side
    5,147.54x = 16,880,692.89
  5. Step 5: Solve for x
    x = 16,880,692.89/5,147.54
  6. Step 6: Final answer
    x = 3,279.37

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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.