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Finding the Fourth Proportional to 8,438.94, 12,651.22 and 5,154.34

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Solution

The fourth proportional to 8,438.94, 12,651.22 and 5,154.34 is: 7,727.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,438.94 : 12,651.22 = 5,154.34 : x
  2. Step 2: Convert to fraction form
    8,438.94/12,651.22 = 5,154.34/x
  3. Step 3: Cross multiply
    8,438.94x = 12,651.22 × 5,154.34
  4. Step 4: Simplify right side
    8,438.94x = 65,208,626.04
  5. Step 5: Solve for x
    x = 65,208,626.04/8,438.94
  6. Step 6: Final answer
    x = 7,727.12

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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.