Home / 8,485.50-12,728.27-2,642.12

Finding the Fourth Proportional to 8,485.50, 12,728.27 and 2,642.12

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Solution

The fourth proportional to 8,485.50, 12,728.27 and 2,642.12 is: 3,963.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,485.50 : 12,728.27 = 2,642.12 : x
  2. Step 2: Convert to fraction form
    8,485.50/12,728.27 = 2,642.12/x
  3. Step 3: Cross multiply
    8,485.50x = 12,728.27 × 2,642.12
  4. Step 4: Simplify right side
    8,485.50x = 33,629,559.70
  5. Step 5: Solve for x
    x = 33,629,559.70/8,485.50
  6. Step 6: Final answer
    x = 3,963.18

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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.