Home / 5,620.36-8,421.18-3,422.44

Finding the Fourth Proportional to 5,620.36, 8,421.18 and 3,422.44

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Solution

The fourth proportional to 5,620.36, 8,421.18 and 3,422.44 is: 5,127.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,620.36 : 8,421.18 = 3,422.44 : x
  2. Step 2: Convert to fraction form
    5,620.36/8,421.18 = 3,422.44/x
  3. Step 3: Cross multiply
    5,620.36x = 8,421.18 × 3,422.44
  4. Step 4: Simplify right side
    5,620.36x = 28,820,983.28
  5. Step 5: Solve for x
    x = 28,820,983.28/5,620.36
  6. Step 6: Final answer
    x = 5,127.96

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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.