Home / 5,081.23-7,621.85-2,157.49

Finding the Fourth Proportional to 5,081.23, 7,621.85 and 2,157.49

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Solution

The fourth proportional to 5,081.23, 7,621.85 and 2,157.49 is: 3,236.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,081.23 : 7,621.85 = 2,157.49 : x
  2. Step 2: Convert to fraction form
    5,081.23/7,621.85 = 2,157.49/x
  3. Step 3: Cross multiply
    5,081.23x = 7,621.85 × 2,157.49
  4. Step 4: Simplify right side
    5,081.23x = 16,444,065.16
  5. Step 5: Solve for x
    x = 16,444,065.16/5,081.23
  6. Step 6: Final answer
    x = 3,236.24

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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.