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Finding the Fourth Proportional to 8,896.20, 12,276.88 and 4,917.30

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Solution

The fourth proportional to 8,896.20, 12,276.88 and 4,917.30 is: 6,785.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,896.20 : 12,276.88 = 4,917.30 : x
  2. Step 2: Convert to fraction form
    8,896.20/12,276.88 = 4,917.30/x
  3. Step 3: Cross multiply
    8,896.20x = 12,276.88 × 4,917.30
  4. Step 4: Simplify right side
    8,896.20x = 60,369,102.02
  5. Step 5: Solve for x
    x = 60,369,102.02/8,896.20
  6. Step 6: Final answer
    x = 6,785.94

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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.