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Finding the Fourth Proportional to 6,609.65, 9,120.47 and 3,776.54

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Solution

The fourth proportional to 6,609.65, 9,120.47 and 3,776.54 is: 5,211.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,609.65 : 9,120.47 = 3,776.54 : x
  2. Step 2: Convert to fraction form
    6,609.65/9,120.47 = 3,776.54/x
  3. Step 3: Cross multiply
    6,609.65x = 9,120.47 × 3,776.54
  4. Step 4: Simplify right side
    6,609.65x = 34,443,755.29
  5. Step 5: Solve for x
    x = 34,443,755.29/6,609.65
  6. Step 6: Final answer
    x = 5,211.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.