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Finding the Fourth Proportional to 7,699.91, 11,543.18 and 3,745.65

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Solution

The fourth proportional to 7,699.91, 11,543.18 and 3,745.65 is: 5,615.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,699.91 : 11,543.18 = 3,745.65 : x
  2. Step 2: Convert to fraction form
    7,699.91/11,543.18 = 3,745.65/x
  3. Step 3: Cross multiply
    7,699.91x = 11,543.18 × 3,745.65
  4. Step 4: Simplify right side
    7,699.91x = 43,236,693.44
  5. Step 5: Solve for x
    x = 43,236,693.44/7,699.91
  6. Step 6: Final answer
    x = 5,615.22

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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.