Home / 3,558.45-4,908.37-2,161.20

Finding the Fourth Proportional to 3,558.45, 4,908.37 and 2,161.20

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Solution

The fourth proportional to 3,558.45, 4,908.37 and 2,161.20 is: 2,981.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,558.45 : 4,908.37 = 2,161.20 : x
  2. Step 2: Convert to fraction form
    3,558.45/4,908.37 = 2,161.20/x
  3. Step 3: Cross multiply
    3,558.45x = 4,908.37 × 2,161.20
  4. Step 4: Simplify right side
    3,558.45x = 10,607,969.24
  5. Step 5: Solve for x
    x = 10,607,969.24/3,558.45
  6. Step 6: Final answer
    x = 2,981.06

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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.