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Finding the Fourth Proportional to 8,479.48, 11,695.44 and 4,942.48

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Solution

The fourth proportional to 8,479.48, 11,695.44 and 4,942.48 is: 6,816.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,479.48 : 11,695.44 = 4,942.48 : x
  2. Step 2: Convert to fraction form
    8,479.48/11,695.44 = 4,942.48/x
  3. Step 3: Cross multiply
    8,479.48x = 11,695.44 × 4,942.48
  4. Step 4: Simplify right side
    8,479.48x = 57,804,478.29
  5. Step 5: Solve for x
    x = 57,804,478.29/8,479.48
  6. Step 6: Final answer
    x = 6,816.98

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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.