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Finding the Fourth Proportional to 8,479.63, 11,703.54 and 5,122.99

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Solution

The fourth proportional to 8,479.63, 11,703.54 and 5,122.99 is: 7,070.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,479.63 : 11,703.54 = 5,122.99 : x
  2. Step 2: Convert to fraction form
    8,479.63/11,703.54 = 5,122.99/x
  3. Step 3: Cross multiply
    8,479.63x = 11,703.54 × 5,122.99
  4. Step 4: Simplify right side
    8,479.63x = 59,957,118.38
  5. Step 5: Solve for x
    x = 59,957,118.38/8,479.63
  6. Step 6: Final answer
    x = 7,070.72

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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.