Home / 8,685.88-13,028.85-2,112.02

Finding the Fourth Proportional to 8,685.88, 13,028.85 and 2,112.02

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Solution

The fourth proportional to 8,685.88, 13,028.85 and 2,112.02 is: 3,168.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.88 : 13,028.85 = 2,112.02 : x
  2. Step 2: Convert to fraction form
    8,685.88/13,028.85 = 2,112.02/x
  3. Step 3: Cross multiply
    8,685.88x = 13,028.85 × 2,112.02
  4. Step 4: Simplify right side
    8,685.88x = 27,517,248.78
  5. Step 5: Solve for x
    x = 27,517,248.78/8,685.88
  6. Step 6: Final answer
    x = 3,168.04

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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.