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Finding the Fourth Proportional to 2,664.99, 3,999.45 and 2,151.14

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Solution

The fourth proportional to 2,664.99, 3,999.45 and 2,151.14 is: 3,228.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,664.99 : 3,999.45 = 2,151.14 : x
  2. Step 2: Convert to fraction form
    2,664.99/3,999.45 = 2,151.14/x
  3. Step 3: Cross multiply
    2,664.99x = 3,999.45 × 2,151.14
  4. Step 4: Simplify right side
    2,664.99x = 8,603,356.88
  5. Step 5: Solve for x
    x = 8,603,356.88/2,664.99
  6. Step 6: Final answer
    x = 3,228.29

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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.