Home / 5,613.21-8,421.90-2,803.28

Finding the Fourth Proportional to 5,613.21, 8,421.90 and 2,803.28

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Solution

The fourth proportional to 5,613.21, 8,421.90 and 2,803.28 is: 4,205.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,613.21 : 8,421.90 = 2,803.28 : x
  2. Step 2: Convert to fraction form
    5,613.21/8,421.90 = 2,803.28/x
  3. Step 3: Cross multiply
    5,613.21x = 8,421.90 × 2,803.28
  4. Step 4: Simplify right side
    5,613.21x = 23,608,891.21
  5. Step 5: Solve for x
    x = 23,608,891.21/5,613.21
  6. Step 6: Final answer
    x = 4,205.95

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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.