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Finding the Fourth Proportional to 6,255.48, 8,621.28 and 5,538.72

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Solution

The fourth proportional to 6,255.48, 8,621.28 and 5,538.72 is: 7,633.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,255.48 : 8,621.28 = 5,538.72 : x
  2. Step 2: Convert to fraction form
    6,255.48/8,621.28 = 5,538.72/x
  3. Step 3: Cross multiply
    6,255.48x = 8,621.28 × 5,538.72
  4. Step 4: Simplify right side
    6,255.48x = 47,750,855.96
  5. Step 5: Solve for x
    x = 47,750,855.96/6,255.48
  6. Step 6: Final answer
    x = 7,633.44

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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.