Home / 2,155.77-3,232.98-839.43

Finding the Fourth Proportional to 2,155.77, 3,232.98 and 839.43

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Solution

The fourth proportional to 2,155.77, 3,232.98 and 839.43 is: 1,258.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.77 : 3,232.98 = 839.43 : x
  2. Step 2: Convert to fraction form
    2,155.77/3,232.98 = 839.43/x
  3. Step 3: Cross multiply
    2,155.77x = 3,232.98 × 839.43
  4. Step 4: Simplify right side
    2,155.77x = 2,713,860.40
  5. Step 5: Solve for x
    x = 2,713,860.40/2,155.77
  6. Step 6: Final answer
    x = 1,258.88

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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.