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Finding the Fourth Proportional to 8,396.79, 12,509.04 and 8,017.71

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Solution

The fourth proportional to 8,396.79, 12,509.04 and 8,017.71 is: 11,944.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,396.79 : 12,509.04 = 8,017.71 : x
  2. Step 2: Convert to fraction form
    8,396.79/12,509.04 = 8,017.71/x
  3. Step 3: Cross multiply
    8,396.79x = 12,509.04 × 8,017.71
  4. Step 4: Simplify right side
    8,396.79x = 100,293,855.10
  5. Step 5: Solve for x
    x = 100,293,855.10/8,396.79
  6. Step 6: Final answer
    x = 11,944.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.