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Finding the Fourth Proportional to 8,949.80, 12,350.20 and 4,970.68

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Solution

The fourth proportional to 8,949.80, 12,350.20 and 4,970.68 is: 6,859.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,949.80 : 12,350.20 = 4,970.68 : x
  2. Step 2: Convert to fraction form
    8,949.80/12,350.20 = 4,970.68/x
  3. Step 3: Cross multiply
    8,949.80x = 12,350.20 × 4,970.68
  4. Step 4: Simplify right side
    8,949.80x = 61,388,892.14
  5. Step 5: Solve for x
    x = 61,388,892.14/8,949.80
  6. Step 6: Final answer
    x = 6,859.25

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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.