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Finding the Fourth Proportional to 9,784.88, 13,502.92 and 5,308.64

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Solution

The fourth proportional to 9,784.88, 13,502.92 and 5,308.64 is: 7,325.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,784.88 : 13,502.92 = 5,308.64 : x
  2. Step 2: Convert to fraction form
    9,784.88/13,502.92 = 5,308.64/x
  3. Step 3: Cross multiply
    9,784.88x = 13,502.92 × 5,308.64
  4. Step 4: Simplify right side
    9,784.88x = 71,682,141.23
  5. Step 5: Solve for x
    x = 71,682,141.23/9,784.88
  6. Step 6: Final answer
    x = 7,325.81

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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.