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Finding the Fourth Proportional to 6,991.88, 10,487.92 and 1,797.76

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Solution

The fourth proportional to 6,991.88, 10,487.92 and 1,797.76 is: 2,696.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,991.88 : 10,487.92 = 1,797.76 : x
  2. Step 2: Convert to fraction form
    6,991.88/10,487.92 = 1,797.76/x
  3. Step 3: Cross multiply
    6,991.88x = 10,487.92 × 1,797.76
  4. Step 4: Simplify right side
    6,991.88x = 18,854,763.06
  5. Step 5: Solve for x
    x = 18,854,763.06/6,991.88
  6. Step 6: Final answer
    x = 2,696.67

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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.