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Finding the Fourth Proportional to 6,421.52, 8,861.96 and 3,627

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Solution

The fourth proportional to 6,421.52, 8,861.96 and 3,627 is: 5,005.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,421.52 : 8,861.96 = 3,627 : x
  2. Step 2: Convert to fraction form
    6,421.52/8,861.96 = 3,627/x
  3. Step 3: Cross multiply
    6,421.52x = 8,861.96 × 3,627
  4. Step 4: Simplify right side
    6,421.52x = 32,142,328.92
  5. Step 5: Solve for x
    x = 32,142,328.92/6,421.52
  6. Step 6: Final answer
    x = 5,005.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.