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Finding the Fourth Proportional to 8,472.69, 11,698.14 and 6,479.77

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Solution

The fourth proportional to 8,472.69, 11,698.14 and 6,479.77 is: 8,946.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,472.69 : 11,698.14 = 6,479.77 : x
  2. Step 2: Convert to fraction form
    8,472.69/11,698.14 = 6,479.77/x
  3. Step 3: Cross multiply
    8,472.69x = 11,698.14 × 6,479.77
  4. Step 4: Simplify right side
    8,472.69x = 75,801,256.63
  5. Step 5: Solve for x
    x = 75,801,256.63/8,472.69
  6. Step 6: Final answer
    x = 8,946.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.