Home / 8,480.09-12,724.23-5,191.40

Finding the Fourth Proportional to 8,480.09, 12,724.23 and 5,191.40

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Solution

The fourth proportional to 8,480.09, 12,724.23 and 5,191.40 is: 7,789.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,480.09 : 12,724.23 = 5,191.40 : x
  2. Step 2: Convert to fraction form
    8,480.09/12,724.23 = 5,191.40/x
  3. Step 3: Cross multiply
    8,480.09x = 12,724.23 × 5,191.40
  4. Step 4: Simplify right side
    8,480.09x = 66,056,504.00
  5. Step 5: Solve for x
    x = 66,056,504.00/8,480.09
  6. Step 6: Final answer
    x = 7,789.60

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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.