Home / 5,390.91-8,081.11-2,579.01

Finding the Fourth Proportional to 5,390.91, 8,081.11 and 2,579.01

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Solution

The fourth proportional to 5,390.91, 8,081.11 and 2,579.01 is: 3,866.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.91 : 8,081.11 = 2,579.01 : x
  2. Step 2: Convert to fraction form
    5,390.91/8,081.11 = 2,579.01/x
  3. Step 3: Cross multiply
    5,390.91x = 8,081.11 × 2,579.01
  4. Step 4: Simplify right side
    5,390.91x = 20,841,223.10
  5. Step 5: Solve for x
    x = 20,841,223.10/5,390.91
  6. Step 6: Final answer
    x = 3,866.00

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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.