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Finding the Fourth Proportional to 8,438.79, 12,655.79 and 3,502.32

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Solution

The fourth proportional to 8,438.79, 12,655.79 and 3,502.32 is: 5,252.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,438.79 : 12,655.79 = 3,502.32 : x
  2. Step 2: Convert to fraction form
    8,438.79/12,655.79 = 3,502.32/x
  3. Step 3: Cross multiply
    8,438.79x = 12,655.79 × 3,502.32
  4. Step 4: Simplify right side
    8,438.79x = 44,324,608.92
  5. Step 5: Solve for x
    x = 44,324,608.92/8,438.79
  6. Step 6: Final answer
    x = 5,252.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.