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Finding the Fourth Proportional to 8,650.22, 12,975.33 and 2,807.28

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Solution

The fourth proportional to 8,650.22, 12,975.33 and 2,807.28 is: 4,210.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,650.22 : 12,975.33 = 2,807.28 : x
  2. Step 2: Convert to fraction form
    8,650.22/12,975.33 = 2,807.28/x
  3. Step 3: Cross multiply
    8,650.22x = 12,975.33 × 2,807.28
  4. Step 4: Simplify right side
    8,650.22x = 36,425,384.40
  5. Step 5: Solve for x
    x = 36,425,384.40/8,650.22
  6. Step 6: Final answer
    x = 4,210.92

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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.