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Finding the Fourth Proportional to 6,638.99, 9,954.80 and 3,077.22

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Solution

The fourth proportional to 6,638.99, 9,954.80 and 3,077.22 is: 4,614.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,638.99 : 9,954.80 = 3,077.22 : x
  2. Step 2: Convert to fraction form
    6,638.99/9,954.80 = 3,077.22/x
  3. Step 3: Cross multiply
    6,638.99x = 9,954.80 × 3,077.22
  4. Step 4: Simplify right side
    6,638.99x = 30,633,059.15
  5. Step 5: Solve for x
    x = 30,633,059.15/6,638.99
  6. Step 6: Final answer
    x = 4,614.12

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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.