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Finding the Fourth Proportional to 8,903.12, 13,356.12 and 2,747.12

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Solution

The fourth proportional to 8,903.12, 13,356.12 and 2,747.12 is: 4,121.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,903.12 : 13,356.12 = 2,747.12 : x
  2. Step 2: Convert to fraction form
    8,903.12/13,356.12 = 2,747.12/x
  3. Step 3: Cross multiply
    8,903.12x = 13,356.12 × 2,747.12
  4. Step 4: Simplify right side
    8,903.12x = 36,690,864.37
  5. Step 5: Solve for x
    x = 36,690,864.37/8,903.12
  6. Step 6: Final answer
    x = 4,121.12

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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.