Home / 5,121.21-7,678.27-2,616.29

Finding the Fourth Proportional to 5,121.21, 7,678.27 and 2,616.29

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Solution

The fourth proportional to 5,121.21, 7,678.27 and 2,616.29 is: 3,922.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.21 : 7,678.27 = 2,616.29 : x
  2. Step 2: Convert to fraction form
    5,121.21/7,678.27 = 2,616.29/x
  3. Step 3: Cross multiply
    5,121.21x = 7,678.27 × 2,616.29
  4. Step 4: Simplify right side
    5,121.21x = 20,088,581.02
  5. Step 5: Solve for x
    x = 20,088,581.02/5,121.21
  6. Step 6: Final answer
    x = 3,922.62

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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.