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Finding the Fourth Proportional to 3,453.42, 5,180.13 and 856.37

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Solution

The fourth proportional to 3,453.42, 5,180.13 and 856.37 is: 1,284.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,453.42 : 5,180.13 = 856.37 : x
  2. Step 2: Convert to fraction form
    3,453.42/5,180.13 = 856.37/x
  3. Step 3: Cross multiply
    3,453.42x = 5,180.13 × 856.37
  4. Step 4: Simplify right side
    3,453.42x = 4,436,082.03
  5. Step 5: Solve for x
    x = 4,436,082.03/3,453.42
  6. Step 6: Final answer
    x = 1,284.55

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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.