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Finding the Fourth Proportional to 6,621.64, 9,071.72 and 6,372.60

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Solution

The fourth proportional to 6,621.64, 9,071.72 and 6,372.60 is: 8,730.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.64 : 9,071.72 = 6,372.60 : x
  2. Step 2: Convert to fraction form
    6,621.64/9,071.72 = 6,372.60/x
  3. Step 3: Cross multiply
    6,621.64x = 9,071.72 × 6,372.60
  4. Step 4: Simplify right side
    6,621.64x = 57,810,442.87
  5. Step 5: Solve for x
    x = 57,810,442.87/6,621.64
  6. Step 6: Final answer
    x = 8,730.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.