Home / 3,126.05-4,314.91-1,800.63

Finding the Fourth Proportional to 3,126.05, 4,314.91 and 1,800.63

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Solution

The fourth proportional to 3,126.05, 4,314.91 and 1,800.63 is: 2,485.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.05 : 4,314.91 = 1,800.63 : x
  2. Step 2: Convert to fraction form
    3,126.05/4,314.91 = 1,800.63/x
  3. Step 3: Cross multiply
    3,126.05x = 4,314.91 × 1,800.63
  4. Step 4: Simplify right side
    3,126.05x = 7,769,556.39
  5. Step 5: Solve for x
    x = 7,769,556.39/3,126.05
  6. Step 6: Final answer
    x = 2,485.42

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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.