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Finding the Fourth Proportional to 8,954.46, 12,355.20 and 5,416.92

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Solution

The fourth proportional to 8,954.46, 12,355.20 and 5,416.92 is: 7,474.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,954.46 : 12,355.20 = 5,416.92 : x
  2. Step 2: Convert to fraction form
    8,954.46/12,355.20 = 5,416.92/x
  3. Step 3: Cross multiply
    8,954.46x = 12,355.20 × 5,416.92
  4. Step 4: Simplify right side
    8,954.46x = 66,927,129.98
  5. Step 5: Solve for x
    x = 66,927,129.98/8,954.46
  6. Step 6: Final answer
    x = 7,474.17

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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.