Home / 8,629.92-12,943.56-2,785.92

Finding the Fourth Proportional to 8,629.92, 12,943.56 and 2,785.92

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Solution

The fourth proportional to 8,629.92, 12,943.56 and 2,785.92 is: 4,178.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,629.92 : 12,943.56 = 2,785.92 : x
  2. Step 2: Convert to fraction form
    8,629.92/12,943.56 = 2,785.92/x
  3. Step 3: Cross multiply
    8,629.92x = 12,943.56 × 2,785.92
  4. Step 4: Simplify right side
    8,629.92x = 36,059,722.68
  5. Step 5: Solve for x
    x = 36,059,722.68/8,629.92
  6. Step 6: Final answer
    x = 4,178.45

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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.