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Finding the Fourth Proportional to 6,638.46, 9,953.10 and 2,938.68

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Solution

The fourth proportional to 6,638.46, 9,953.10 and 2,938.68 is: 4,405.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,638.46 : 9,953.10 = 2,938.68 : x
  2. Step 2: Convert to fraction form
    6,638.46/9,953.10 = 2,938.68/x
  3. Step 3: Cross multiply
    6,638.46x = 9,953.10 × 2,938.68
  4. Step 4: Simplify right side
    6,638.46x = 29,248,975.91
  5. Step 5: Solve for x
    x = 29,248,975.91/6,638.46
  6. Step 6: Final answer
    x = 4,405.99

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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.