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Finding the Fourth Proportional to 8,908.75, 12,293.83 and 4,929.78

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Solution

The fourth proportional to 8,908.75, 12,293.83 and 4,929.78 is: 6,802.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,908.75 : 12,293.83 = 4,929.78 : x
  2. Step 2: Convert to fraction form
    8,908.75/12,293.83 = 4,929.78/x
  3. Step 3: Cross multiply
    8,908.75x = 12,293.83 × 4,929.78
  4. Step 4: Simplify right side
    8,908.75x = 60,605,877.26
  5. Step 5: Solve for x
    x = 60,605,877.26/8,908.75
  6. Step 6: Final answer
    x = 6,802.96

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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.