Home / 2,664.39-3,998.63-2,145.66

Finding the Fourth Proportional to 2,664.39, 3,998.63 and 2,145.66

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Solution

The fourth proportional to 2,664.39, 3,998.63 and 2,145.66 is: 3,220.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,664.39 : 3,998.63 = 2,145.66 : x
  2. Step 2: Convert to fraction form
    2,664.39/3,998.63 = 2,145.66/x
  3. Step 3: Cross multiply
    2,664.39x = 3,998.63 × 2,145.66
  4. Step 4: Simplify right side
    2,664.39x = 8,579,690.82
  5. Step 5: Solve for x
    x = 8,579,690.82/2,664.39
  6. Step 6: Final answer
    x = 3,220.13

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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.