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Finding the Fourth Proportional to 6,349.55, 8,756.96 and 5,168.57

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Solution

The fourth proportional to 6,349.55, 8,756.96 and 5,168.57 is: 7,128.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,349.55 : 8,756.96 = 5,168.57 : x
  2. Step 2: Convert to fraction form
    6,349.55/8,756.96 = 5,168.57/x
  3. Step 3: Cross multiply
    6,349.55x = 8,756.96 × 5,168.57
  4. Step 4: Simplify right side
    6,349.55x = 45,260,891.12
  5. Step 5: Solve for x
    x = 45,260,891.12/6,349.55
  6. Step 6: Final answer
    x = 7,128.21

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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.