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Finding the Fourth Proportional to 8,776.64, 12,115.08 and 5,958.60

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Solution

The fourth proportional to 8,776.64, 12,115.08 and 5,958.60 is: 8,225.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,776.64 : 12,115.08 = 5,958.60 : x
  2. Step 2: Convert to fraction form
    8,776.64/12,115.08 = 5,958.60/x
  3. Step 3: Cross multiply
    8,776.64x = 12,115.08 × 5,958.60
  4. Step 4: Simplify right side
    8,776.64x = 72,188,915.69
  5. Step 5: Solve for x
    x = 72,188,915.69/8,776.64
  6. Step 6: Final answer
    x = 8,225.12

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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.