Home / 3,928.10-5,891.95-1,331.06

Finding the Fourth Proportional to 3,928.10, 5,891.95 and 1,331.06

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Solution

The fourth proportional to 3,928.10, 5,891.95 and 1,331.06 is: 1,996.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.10 : 5,891.95 = 1,331.06 : x
  2. Step 2: Convert to fraction form
    3,928.10/5,891.95 = 1,331.06/x
  3. Step 3: Cross multiply
    3,928.10x = 5,891.95 × 1,331.06
  4. Step 4: Simplify right side
    3,928.10x = 7,842,538.97
  5. Step 5: Solve for x
    x = 7,842,538.97/3,928.10
  6. Step 6: Final answer
    x = 1,996.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.