Home / 7,621.92-11,418.48-5,775.12

Finding the Fourth Proportional to 7,621.92, 11,418.48 and 5,775.12

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Solution

The fourth proportional to 7,621.92, 11,418.48 and 5,775.12 is: 8,651.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,621.92 : 11,418.48 = 5,775.12 : x
  2. Step 2: Convert to fraction form
    7,621.92/11,418.48 = 5,775.12/x
  3. Step 3: Cross multiply
    7,621.92x = 11,418.48 × 5,775.12
  4. Step 4: Simplify right side
    7,621.92x = 65,943,092.22
  5. Step 5: Solve for x
    x = 65,943,092.22/7,621.92
  6. Step 6: Final answer
    x = 8,651.77

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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.