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Finding the Fourth Proportional to 8,994.53, 12,409.20 and 5,215.62

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Solution

The fourth proportional to 8,994.53, 12,409.20 and 5,215.62 is: 7,195.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,994.53 : 12,409.20 = 5,215.62 : x
  2. Step 2: Convert to fraction form
    8,994.53/12,409.20 = 5,215.62/x
  3. Step 3: Cross multiply
    8,994.53x = 12,409.20 × 5,215.62
  4. Step 4: Simplify right side
    8,994.53x = 64,721,671.70
  5. Step 5: Solve for x
    x = 64,721,671.70/8,994.53
  6. Step 6: Final answer
    x = 7,195.67

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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.