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Finding the Fourth Proportional to 8,958.75, 13,438.13 and 3,486.75

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Solution

The fourth proportional to 8,958.75, 13,438.13 and 3,486.75 is: 5,230.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,958.75 : 13,438.13 = 3,486.75 : x
  2. Step 2: Convert to fraction form
    8,958.75/13,438.13 = 3,486.75/x
  3. Step 3: Cross multiply
    8,958.75x = 13,438.13 × 3,486.75
  4. Step 4: Simplify right side
    8,958.75x = 46,855,382.34
  5. Step 5: Solve for x
    x = 46,855,382.34/8,958.75
  6. Step 6: Final answer
    x = 5,230.13

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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.