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Finding the Fourth Proportional to 7,763.99, 11,644.34 and 2,215.85

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Solution

The fourth proportional to 7,763.99, 11,644.34 and 2,215.85 is: 3,323.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,763.99 : 11,644.34 = 2,215.85 : x
  2. Step 2: Convert to fraction form
    7,763.99/11,644.34 = 2,215.85/x
  3. Step 3: Cross multiply
    7,763.99x = 11,644.34 × 2,215.85
  4. Step 4: Simplify right side
    7,763.99x = 25,802,041.49
  5. Step 5: Solve for x
    x = 25,802,041.49/7,763.99
  6. Step 6: Final answer
    x = 3,323.30

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Double scale
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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.