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Finding the Fourth Proportional to 8,605.86, 12,915.02 and 3,059.25

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Solution

The fourth proportional to 8,605.86, 12,915.02 and 3,059.25 is: 4,591.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.86 : 12,915.02 = 3,059.25 : x
  2. Step 2: Convert to fraction form
    8,605.86/12,915.02 = 3,059.25/x
  3. Step 3: Cross multiply
    8,605.86x = 12,915.02 × 3,059.25
  4. Step 4: Simplify right side
    8,605.86x = 39,510,259.64
  5. Step 5: Solve for x
    x = 39,510,259.64/8,605.86
  6. Step 6: Final answer
    x = 4,591.09

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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.