Home / 5,416.89-8,121.94-2,126.16

Finding the Fourth Proportional to 5,416.89, 8,121.94 and 2,126.16

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Solution

The fourth proportional to 5,416.89, 8,121.94 and 2,126.16 is: 3,187.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,416.89 : 8,121.94 = 2,126.16 : x
  2. Step 2: Convert to fraction form
    5,416.89/8,121.94 = 2,126.16/x
  3. Step 3: Cross multiply
    5,416.89x = 8,121.94 × 2,126.16
  4. Step 4: Simplify right side
    5,416.89x = 17,268,538.64
  5. Step 5: Solve for x
    x = 17,268,538.64/5,416.89
  6. Step 6: Final answer
    x = 3,187.91

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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.