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Finding the Fourth Proportional to 8,874.28, 12,240.18 and 6,222.28

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Solution

The fourth proportional to 8,874.28, 12,240.18 and 6,222.28 is: 8,582.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,874.28 : 12,240.18 = 6,222.28 : x
  2. Step 2: Convert to fraction form
    8,874.28/12,240.18 = 6,222.28/x
  3. Step 3: Cross multiply
    8,874.28x = 12,240.18 × 6,222.28
  4. Step 4: Simplify right side
    8,874.28x = 76,161,827.21
  5. Step 5: Solve for x
    x = 76,161,827.21/8,874.28
  6. Step 6: Final answer
    x = 8,582.31

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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.