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Finding the Fourth Proportional to 8,651.40, 11,940.09 and 4,875.30

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Solution

The fourth proportional to 8,651.40, 11,940.09 and 4,875.30 is: 6,728.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,651.40 : 11,940.09 = 4,875.30 : x
  2. Step 2: Convert to fraction form
    8,651.40/11,940.09 = 4,875.30/x
  3. Step 3: Cross multiply
    8,651.40x = 11,940.09 × 4,875.30
  4. Step 4: Simplify right side
    8,651.40x = 58,211,520.78
  5. Step 5: Solve for x
    x = 58,211,520.78/8,651.40
  6. Step 6: Final answer
    x = 6,728.57

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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.