Home / 5,424.16-8,139.12-2,829.28

Finding the Fourth Proportional to 5,424.16, 8,139.12 and 2,829.28

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Solution

The fourth proportional to 5,424.16, 8,139.12 and 2,829.28 is: 4,245.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,424.16 : 8,139.12 = 2,829.28 : x
  2. Step 2: Convert to fraction form
    5,424.16/8,139.12 = 2,829.28/x
  3. Step 3: Cross multiply
    5,424.16x = 8,139.12 × 2,829.28
  4. Step 4: Simplify right side
    5,424.16x = 23,027,849.43
  5. Step 5: Solve for x
    x = 23,027,849.43/5,424.16
  6. Step 6: Final answer
    x = 4,245.42

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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.