Home / 3,391.80-4,679.64-1,899.48

Finding the Fourth Proportional to 3,391.80, 4,679.64 and 1,899.48

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Solution

The fourth proportional to 3,391.80, 4,679.64 and 1,899.48 is: 2,620.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.80 : 4,679.64 = 1,899.48 : x
  2. Step 2: Convert to fraction form
    3,391.80/4,679.64 = 1,899.48/x
  3. Step 3: Cross multiply
    3,391.80x = 4,679.64 × 1,899.48
  4. Step 4: Simplify right side
    3,391.80x = 8,888,882.59
  5. Step 5: Solve for x
    x = 8,888,882.59/3,391.80
  6. Step 6: Final answer
    x = 2,620.70

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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.