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Finding the Fourth Proportional to 8,628.54, 12,946.32 and 3,950.79

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Solution

The fourth proportional to 8,628.54, 12,946.32 and 3,950.79 is: 5,927.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.54 : 12,946.32 = 3,950.79 : x
  2. Step 2: Convert to fraction form
    8,628.54/12,946.32 = 3,950.79/x
  3. Step 3: Cross multiply
    8,628.54x = 12,946.32 × 3,950.79
  4. Step 4: Simplify right side
    8,628.54x = 51,148,191.59
  5. Step 5: Solve for x
    x = 51,148,191.59/8,628.54
  6. Step 6: Final answer
    x = 5,927.79

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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.