Home / 3,438.51-4,744.03-2,161.15

Finding the Fourth Proportional to 3,438.51, 4,744.03 and 2,161.15

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Solution

The fourth proportional to 3,438.51, 4,744.03 and 2,161.15 is: 2,981.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.51 : 4,744.03 = 2,161.15 : x
  2. Step 2: Convert to fraction form
    3,438.51/4,744.03 = 2,161.15/x
  3. Step 3: Cross multiply
    3,438.51x = 4,744.03 × 2,161.15
  4. Step 4: Simplify right side
    3,438.51x = 10,252,560.43
  5. Step 5: Solve for x
    x = 10,252,560.43/3,438.51
  6. Step 6: Final answer
    x = 2,981.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.