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Finding the Fourth Proportional to 8,991.97, 13,487.37 and 4,315.30

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Solution

The fourth proportional to 8,991.97, 13,487.37 and 4,315.30 is: 6,472.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991.97 : 13,487.37 = 4,315.30 : x
  2. Step 2: Convert to fraction form
    8,991.97/13,487.37 = 4,315.30/x
  3. Step 3: Cross multiply
    8,991.97x = 13,487.37 × 4,315.30
  4. Step 4: Simplify right side
    8,991.97x = 58,202,047.76
  5. Step 5: Solve for x
    x = 58,202,047.76/8,991.97
  6. Step 6: Final answer
    x = 6,472.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.