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Finding the Fourth Proportional to 8,479.87, 11,712.08 and 6,784.25

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Solution

The fourth proportional to 8,479.87, 11,712.08 and 6,784.25 is: 9,370.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,479.87 : 11,712.08 = 6,784.25 : x
  2. Step 2: Convert to fraction form
    8,479.87/11,712.08 = 6,784.25/x
  3. Step 3: Cross multiply
    8,479.87x = 11,712.08 × 6,784.25
  4. Step 4: Simplify right side
    8,479.87x = 79,457,724.98
  5. Step 5: Solve for x
    x = 79,457,724.98/8,479.87
  6. Step 6: Final answer
    x = 9,370.16

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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.