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Finding the Fourth Proportional to 7,641.56, 10,563.01 and 6,375.23

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Solution

The fourth proportional to 7,641.56, 10,563.01 and 6,375.23 is: 8,812.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,641.56 : 10,563.01 = 6,375.23 : x
  2. Step 2: Convert to fraction form
    7,641.56/10,563.01 = 6,375.23/x
  3. Step 3: Cross multiply
    7,641.56x = 10,563.01 × 6,375.23
  4. Step 4: Simplify right side
    7,641.56x = 67,341,589.10
  5. Step 5: Solve for x
    x = 67,341,589.10/7,641.56
  6. Step 6: Final answer
    x = 8,812.54

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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.