Home / 3,738.39-5,158.80-2,166.99

Finding the Fourth Proportional to 3,738.39, 5,158.80 and 2,166.99

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Solution

The fourth proportional to 3,738.39, 5,158.80 and 2,166.99 is: 2,990.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,738.39 : 5,158.80 = 2,166.99 : x
  2. Step 2: Convert to fraction form
    3,738.39/5,158.80 = 2,166.99/x
  3. Step 3: Cross multiply
    3,738.39x = 5,158.80 × 2,166.99
  4. Step 4: Simplify right side
    3,738.39x = 11,179,068.01
  5. Step 5: Solve for x
    x = 11,179,068.01/3,738.39
  6. Step 6: Final answer
    x = 2,990.34

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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.