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Finding the Fourth Proportional to 8,364.74, 12,542.85 and 2,816.10

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Solution

The fourth proportional to 8,364.74, 12,542.85 and 2,816.10 is: 4,222.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,364.74 : 12,542.85 = 2,816.10 : x
  2. Step 2: Convert to fraction form
    8,364.74/12,542.85 = 2,816.10/x
  3. Step 3: Cross multiply
    8,364.74x = 12,542.85 × 2,816.10
  4. Step 4: Simplify right side
    8,364.74x = 35,321,919.89
  5. Step 5: Solve for x
    x = 35,321,919.89/8,364.74
  6. Step 6: Final answer
    x = 4,222.72

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1.5x scale

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.