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Finding the Fourth Proportional to 6,638.88, 9,959.54 and 2,256.11

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Solution

The fourth proportional to 6,638.88, 9,959.54 and 2,256.11 is: 3,384.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,638.88 : 9,959.54 = 2,256.11 : x
  2. Step 2: Convert to fraction form
    6,638.88/9,959.54 = 2,256.11/x
  3. Step 3: Cross multiply
    6,638.88x = 9,959.54 × 2,256.11
  4. Step 4: Simplify right side
    6,638.88x = 22,469,756.71
  5. Step 5: Solve for x
    x = 22,469,756.71/6,638.88
  6. Step 6: Final answer
    x = 3,384.57

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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.