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Finding the Fourth Proportional to 7,751.20, 11,668.96 and 7,062.30

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Solution

The fourth proportional to 7,751.20, 11,668.96 and 7,062.30 is: 10,631.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,751.20 : 11,668.96 = 7,062.30 : x
  2. Step 2: Convert to fraction form
    7,751.20/11,668.96 = 7,062.30/x
  3. Step 3: Cross multiply
    7,751.20x = 11,668.96 × 7,062.30
  4. Step 4: Simplify right side
    7,751.20x = 82,409,696.21
  5. Step 5: Solve for x
    x = 82,409,696.21/7,751.20
  6. Step 6: Final answer
    x = 10,631.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.