Home / 5,389.24-8,072.70-2,618.20

Finding the Fourth Proportional to 5,389.24, 8,072.70 and 2,618.20

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Solution

The fourth proportional to 5,389.24, 8,072.70 and 2,618.20 is: 3,921.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,389.24 : 8,072.70 = 2,618.20 : x
  2. Step 2: Convert to fraction form
    5,389.24/8,072.70 = 2,618.20/x
  3. Step 3: Cross multiply
    5,389.24x = 8,072.70 × 2,618.20
  4. Step 4: Simplify right side
    5,389.24x = 21,135,943.14
  5. Step 5: Solve for x
    x = 21,135,943.14/5,389.24
  6. Step 6: Final answer
    x = 3,921.88

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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.