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Finding the Fourth Proportional to 7,765.80, 11,650.52 and 2,219.22

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Solution

The fourth proportional to 7,765.80, 11,650.52 and 2,219.22 is: 3,329.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,765.80 : 11,650.52 = 2,219.22 : x
  2. Step 2: Convert to fraction form
    7,765.80/11,650.52 = 2,219.22/x
  3. Step 3: Cross multiply
    7,765.80x = 11,650.52 × 2,219.22
  4. Step 4: Simplify right side
    7,765.80x = 25,855,066.99
  5. Step 5: Solve for x
    x = 25,855,066.99/7,765.80
  6. Step 6: Final answer
    x = 3,329.35

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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.