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Finding the Fourth Proportional to 8,807.28, 13,210.86 and 2,651.28

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Solution

The fourth proportional to 8,807.28, 13,210.86 and 2,651.28 is: 3,976.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,807.28 : 13,210.86 = 2,651.28 : x
  2. Step 2: Convert to fraction form
    8,807.28/13,210.86 = 2,651.28/x
  3. Step 3: Cross multiply
    8,807.28x = 13,210.86 × 2,651.28
  4. Step 4: Simplify right side
    8,807.28x = 35,025,688.90
  5. Step 5: Solve for x
    x = 35,025,688.90/8,807.28
  6. Step 6: Final answer
    x = 3,976.90

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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.