Home / 8,628.50-12,945.48-2,785.56

Finding the Fourth Proportional to 8,628.50, 12,945.48 and 2,785.56

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Solution

The fourth proportional to 8,628.50, 12,945.48 and 2,785.56 is: 4,179.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.50 : 12,945.48 = 2,785.56 : x
  2. Step 2: Convert to fraction form
    8,628.50/12,945.48 = 2,785.56/x
  3. Step 3: Cross multiply
    8,628.50x = 12,945.48 × 2,785.56
  4. Step 4: Simplify right side
    8,628.50x = 36,060,411.27
  5. Step 5: Solve for x
    x = 36,060,411.27/8,628.50
  6. Step 6: Final answer
    x = 4,179.22

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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.