Home / 5,121.32-7,074.42-4,343.72

Finding the Fourth Proportional to 5,121.32, 7,074.42 and 4,343.72

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Solution

The fourth proportional to 5,121.32, 7,074.42 and 4,343.72 is: 6,000.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.32 : 7,074.42 = 4,343.72 : x
  2. Step 2: Convert to fraction form
    5,121.32/7,074.42 = 4,343.72/x
  3. Step 3: Cross multiply
    5,121.32x = 7,074.42 × 4,343.72
  4. Step 4: Simplify right side
    5,121.32x = 30,729,299.64
  5. Step 5: Solve for x
    x = 30,729,299.64/5,121.32
  6. Step 6: Final answer
    x = 6,000.27

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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.