Home / 8,631.47-12,944.43-2,786.72

Finding the Fourth Proportional to 8,631.47, 12,944.43 and 2,786.72

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Solution

The fourth proportional to 8,631.47, 12,944.43 and 2,786.72 is: 4,179.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.47 : 12,944.43 = 2,786.72 : x
  2. Step 2: Convert to fraction form
    8,631.47/12,944.43 = 2,786.72/x
  3. Step 3: Cross multiply
    8,631.47x = 12,944.43 × 2,786.72
  4. Step 4: Simplify right side
    8,631.47x = 36,072,501.97
  5. Step 5: Solve for x
    x = 36,072,501.97/8,631.47
  6. Step 6: Final answer
    x = 4,179.18

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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.