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Finding the Fourth Proportional to 5,613, 8,421.92 and 2,152.68

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Solution

The fourth proportional to 5,613, 8,421.92 and 2,152.68 is: 3,229.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,613 : 8,421.92 = 2,152.68 : x
  2. Step 2: Convert to fraction form
    5,613/8,421.92 = 2,152.68/x
  3. Step 3: Cross multiply
    5,613x = 8,421.92 × 2,152.68
  4. Step 4: Simplify right side
    5,613x = 18,129,698.75
  5. Step 5: Solve for x
    x = 18,129,698.75/5,613
  6. Step 6: Final answer
    x = 3,229.95

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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.