Home / 8,427.23-12,640.81-2,186.72

Finding the Fourth Proportional to 8,427.23, 12,640.81 and 2,186.72

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Solution

The fourth proportional to 8,427.23, 12,640.81 and 2,186.72 is: 3,280.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,427.23 : 12,640.81 = 2,186.72 : x
  2. Step 2: Convert to fraction form
    8,427.23/12,640.81 = 2,186.72/x
  3. Step 3: Cross multiply
    8,427.23x = 12,640.81 × 2,186.72
  4. Step 4: Simplify right side
    8,427.23x = 27,641,912.04
  5. Step 5: Solve for x
    x = 27,641,912.04/8,427.23
  6. Step 6: Final answer
    x = 3,280.07

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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.