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Finding the Fourth Proportional to 8,628.30, 12,945.18 and 6,550.65

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Solution

The fourth proportional to 8,628.30, 12,945.18 and 6,550.65 is: 9,828.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.30 : 12,945.18 = 6,550.65 : x
  2. Step 2: Convert to fraction form
    8,628.30/12,945.18 = 6,550.65/x
  3. Step 3: Cross multiply
    8,628.30x = 12,945.18 × 6,550.65
  4. Step 4: Simplify right side
    8,628.30x = 84,799,343.37
  5. Step 5: Solve for x
    x = 84,799,343.37/8,628.30
  6. Step 6: Final answer
    x = 9,828.05

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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.