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Finding the Fourth Proportional to 7,745.48, 11,621.16 and 3,587.48

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Solution

The fourth proportional to 7,745.48, 11,621.16 and 3,587.48 is: 5,382.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,745.48 : 11,621.16 = 3,587.48 : x
  2. Step 2: Convert to fraction form
    7,745.48/11,621.16 = 3,587.48/x
  3. Step 3: Cross multiply
    7,745.48x = 11,621.16 × 3,587.48
  4. Step 4: Simplify right side
    7,745.48x = 41,690,679.08
  5. Step 5: Solve for x
    x = 41,690,679.08/7,745.48
  6. Step 6: Final answer
    x = 5,382.58

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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.