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Finding the Fourth Proportional to 9,613.12, 13,268.64 and 6,629.44

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Solution

The fourth proportional to 9,613.12, 13,268.64 and 6,629.44 is: 9,150.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,613.12 : 13,268.64 = 6,629.44 : x
  2. Step 2: Convert to fraction form
    9,613.12/13,268.64 = 6,629.44/x
  3. Step 3: Cross multiply
    9,613.12x = 13,268.64 × 6,629.44
  4. Step 4: Simplify right side
    9,613.12x = 87,963,652.76
  5. Step 5: Solve for x
    x = 87,963,652.76/9,613.12
  6. Step 6: Final answer
    x = 9,150.37

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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.