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Finding the Fourth Proportional to 8,949.87, 12,349.49 and 4,970.97

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Solution

The fourth proportional to 8,949.87, 12,349.49 and 4,970.97 is: 6,859.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,949.87 : 12,349.49 = 4,970.97 : x
  2. Step 2: Convert to fraction form
    8,949.87/12,349.49 = 4,970.97/x
  3. Step 3: Cross multiply
    8,949.87x = 12,349.49 × 4,970.97
  4. Step 4: Simplify right side
    8,949.87x = 61,388,919.45
  5. Step 5: Solve for x
    x = 61,388,919.45/8,949.87
  6. Step 6: Final answer
    x = 6,859.20

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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.