Home / 5,679.34-8,519.57-2,172.29

Finding the Fourth Proportional to 5,679.34, 8,519.57 and 2,172.29

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Solution

The fourth proportional to 5,679.34, 8,519.57 and 2,172.29 is: 3,258.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,679.34 : 8,519.57 = 2,172.29 : x
  2. Step 2: Convert to fraction form
    5,679.34/8,519.57 = 2,172.29/x
  3. Step 3: Cross multiply
    5,679.34x = 8,519.57 × 2,172.29
  4. Step 4: Simplify right side
    5,679.34x = 18,507,000.23
  5. Step 5: Solve for x
    x = 18,507,000.23/5,679.34
  6. Step 6: Final answer
    x = 3,258.65

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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.