Home / 3,391.40-5,087.13-1,635.99

Finding the Fourth Proportional to 3,391.40, 5,087.13 and 1,635.99

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Solution

The fourth proportional to 3,391.40, 5,087.13 and 1,635.99 is: 2,454.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.40 : 5,087.13 = 1,635.99 : x
  2. Step 2: Convert to fraction form
    3,391.40/5,087.13 = 1,635.99/x
  3. Step 3: Cross multiply
    3,391.40x = 5,087.13 × 1,635.99
  4. Step 4: Simplify right side
    3,391.40x = 8,322,493.81
  5. Step 5: Solve for x
    x = 8,322,493.81/3,391.40
  6. Step 6: Final answer
    x = 2,454.00

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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.